16536978448 has 10 divisors (see below), whose sum is σ = 32040395774. Its totient is φ = 8268489216.

The previous prime is 16536978421. The next prime is 16536978457. The reversal of 16536978448 is 84487963561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12411742464 + 4125235984 = 111408^2 + 64228^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 516780561 + ... + 516780592.

Almost surely, 2^16536978448 is an apocalyptic number.

It is an amenable number.

16536978448 is a deficient number, since it is larger than the sum of its proper divisors (15503417326).

16536978448 is a wasteful number, since it uses less digits than its factorization.

16536978448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033561161 (or 1033561155 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 61.

The spelling of 16536978448 in words is "sixteen billion, five hundred thirty-six million, nine hundred seventy-eight thousand, four hundred forty-eight".