663167156057 has 12 divisors (see below), whose sum is σ = 771453749556. Its totient is φ = 568418376960.

The previous prime is 663167156023. The next prime is 663167156063. The reversal of 663167156057 is 750651761366.

It can be written as a sum of positive squares in 2 ways, for example, as 561336602176 + 101830553881 = 749224^2 + 319109^2 .

It is not a de Polignac number, because 663167156057 - 2³⁰ = 662093414233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (663167156017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3687173 + ... + 3862845.

It is an arithmetic number, because the mean of its divisors is an integer number (64287812463).

Almost surely, 2^663167156057 is an apocalyptic number.

It is an amenable number.

663167156057 is a deficient number, since it is larger than the sum of its proper divisors (108286593499).

663167156057 is a wasteful number, since it uses less digits than its factorization.

663167156057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252728 (or 252721 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 663167156057 in words is "six hundred sixty-three billion, one hundred sixty-seven million, one hundred fifty-six thousand, fifty-seven".