16257944264 has 8 divisors (see below), whose sum is σ = 30483645510. Its totient is φ = 8128972128.

The previous prime is 16257944239. The next prime is 16257944279. The reversal of 16257944264 is 46244975261.

It can be written as a sum of positive squares in only one way, i.e., 11883180100 + 4374764164 = 109010^2 + 66142^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1016121509 + ... + 1016121524.

Almost surely, 2^16257944264 is an apocalyptic number.

It is an amenable number.

16257944264 is a deficient number, since it is larger than the sum of its proper divisors (14225701246).

16257944264 is a wasteful number, since it uses less digits than its factorization.

16257944264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032243039 (or 2032243035 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

The spelling of 16257944264 in words is "sixteen billion, two hundred fifty-seven million, nine hundred forty-four thousand, two hundred sixty-four".