16557007363604 has 6 divisors (see below), whose sum is σ = 28974762886314. Its totient is φ = 8278503681800.

The previous prime is 16557007363601. The next prime is 16557007363619. The reversal of 16557007363604 is 40636370075561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15675248803204 + 881758560400 = 3959198^2 + 939020^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16557007363601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069625920447 + ... + 2069625920454.

It is an arithmetic number, because the mean of its divisors is an integer number (4829127147719).

Almost surely, 2^{16557007363604} is an apocalyptic number.

It is an amenable number.

16557007363604 is a deficient number, since it is larger than the sum of its proper divisors (12417755522710).

16557007363604 is a wasteful number, since it uses less digits than its factorization.

16557007363604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4139251840905 (or 4139251840903 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 53.

The spelling of 16557007363604 in words is "sixteen trillion, five hundred fifty-seven billion, seven million, three hundred sixty-three thousand, six hundred four".