15493994048 has 28 divisors (see below), whose sum is σ = 33110965020. Its totient is φ = 7151073792.

The previous prime is 15493994027. The next prime is 15493994051. The reversal of 15493994048 is 84049939451.

It can be written as a sum of positive squares in 2 ways, for example, as 10533327424 + 4960666624 = 102632^2 + 70432^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15493993984 and 15493994002.

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, 9310463 + ... + 9312126.

It is an arithmetic number, because the mean of its divisors is an integer number (1182534465).

Almost surely, 2^15493994048 is an apocalyptic number.

It is an amenable number.

15493994048 is an abundant number, since it is smaller than the sum of its proper divisors (17616970972).

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

15493994048 is a wasteful number, since it uses less digits than its factorization.

15493994048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18622614 (or 18622604 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 15493994048 in words is "fifteen billion, four hundred ninety-three million, nine hundred ninety-four thousand, forty-eight".