215040453044 has 24 divisors (see below), whose sum is σ = 389708655840. Its totient is φ = 103702956896.

The previous prime is 215040453031. The next prime is 215040453049. The reversal of 215040453044 is 440354040512.

It is a self number, because there is not a number n which added to its sum of digits gives 215040453044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215040453049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868922 + ... + 1088625.

It is an arithmetic number, because the mean of its divisors is an integer number (16237860660).

Almost surely, 2^215040453044 is an apocalyptic number.

It is an amenable number.

215040453044 is a deficient number, since it is larger than the sum of its proper divisors (174668202796).

215040453044 is a wasteful number, since it uses less digits than its factorization.

215040453044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958527 (or 1958525 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 215040453044 its reverse (440354040512), we get a palindrome (655394493556).

The spelling of 215040453044 in words is "two hundred fifteen billion, forty million, four hundred fifty-three thousand, forty-four".