15450120513 has 12 divisors (see below), whose sum is σ = 22325144400. Its totient is φ = 10296247896.

The previous prime is 15450120493. The next prime is 15450120559. The reversal of 15450120513 is 31502105451.

15450120513 is a `hidden beast` number, since 1 + 5 + 450 + 1 + 205 + 1 + 3 = 666.

It is not a de Polignac number, because 15450120513 - 2⁹ = 15450120001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15450120563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293731 + ... + 342312.

It is an arithmetic number, because the mean of its divisors is an integer number (1860428700).

Almost surely, 2^15450120513 is an apocalyptic number.

It is an amenable number.

15450120513 is a deficient number, since it is larger than the sum of its proper divisors (6875023887).

15450120513 is a wasteful number, since it uses less digits than its factorization.

15450120513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638748 (or 638745 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 15450120513 its reverse (31502105451), we get a palindrome (46952225964).

The spelling of 15450120513 in words is "fifteen billion, four hundred fifty million, one hundred twenty thousand, five hundred thirteen".