15120856448 has 32 divisors (see below), whose sum is σ = 31895561160. Its totient is φ = 7115696128.

The previous prime is 15120856417. The next prime is 15120856451. The reversal of 15120856448 is 84465802151.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 15120856399 and 15120856408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3472286 + ... + 3476637.

Almost surely, 2^15120856448 is an apocalyptic number.

It is an amenable number.

15120856448 is an abundant number, since it is smaller than the sum of its proper divisors (16774704712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15120856448 is an equidigital number, since it uses as much as digits as its factorization.

15120856448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6948954 (or 6948942 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 15120856448 in words is "fifteen billion, one hundred twenty million, eight hundred fifty-six thousand, four hundred forty-eight".