16396961524 has 6 divisors (see below), whose sum is σ = 28694682674. Its totient is φ = 8198480760.

The previous prime is 16396961519. The next prime is 16396961569. The reversal of 16396961524 is 42516969361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12818768400 + 3578193124 = 113220^2 + 59818^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2049620187 + ... + 2049620194.

Almost surely, 2^16396961524 is an apocalyptic number.

It is an amenable number.

16396961524 is a deficient number, since it is larger than the sum of its proper divisors (12297721150).

16396961524 is a wasteful number, since it uses less digits than its factorization.

16396961524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099240385 (or 4099240383 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 52.

The spelling of 16396961524 in words is "sixteen billion, three hundred ninety-six million, nine hundred sixty-one thousand, five hundred twenty-four".