15494331456 has 56 divisors (see below), whose sum is σ = 45550470240. Its totient is φ = 5164776576.

The previous prime is 15494331449. The next prime is 15494331473. The reversal of 15494331456 is 65413349451.

15494331456 is a `hidden beast` number, since 1 + 549 + 43 + 3 + 14 + 56 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4481586 + ... + 4485041.

Almost surely, 2^15494331456 is an apocalyptic number.

15494331456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15494331456 is an abundant number, since it is smaller than the sum of its proper divisors (30056138784).

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

15494331456 is an equidigital number, since it uses as much as digits as its factorization.

15494331456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8966648 (or 8966632 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 15494331456 in words is "fifteen billion, four hundred ninety-four million, three hundred thirty-one thousand, four hundred fifty-six".