513304020123453 has 24 divisors (see below), whose sum is σ = 845441915500728. Its totient is φ = 297298255997952.

The previous prime is 513304020123449. The next prime is 513304020123491. The reversal of 513304020123453 is 354321020403315.

513304020123453 is a `hidden beast` number, since 5 + 1 + 3 + 304 + 0 + 2 + 0 + 1 + 2 + 345 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1831510208889 + 511472509914564 = 1353333^2 + 22615758^2 .

It is not a de Polignac number, because 513304020123453 - 2² = 513304020123449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513304020128453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129035699400 + ... + 129035703377.

It is an arithmetic number, because the mean of its divisors is an integer number (35226746479197).

Almost surely, 2^{513304020123453} is an apocalyptic number.

It is an amenable number.

513304020123453 is a deficient number, since it is larger than the sum of its proper divisors (332137895377275).

513304020123453 is a wasteful number, since it uses less digits than its factorization.

513304020123453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258071402813 (or 258071402810 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 513304020123453 its reverse (354321020403315), we get a palindrome (867625040526768).

The spelling of 513304020123453 in words is "five hundred thirteen trillion, three hundred four billion, twenty million, one hundred twenty-three thousand, four hundred fifty-three".