161257202264 has 16 divisors (see below), whose sum is σ = 302362567200. Its totient is φ = 80627184352.

The previous prime is 161257202251. The next prime is 161257202269. The reversal of 161257202264 is 462202752161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161257202269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428417 + ... + 711375.

It is an arithmetic number, because the mean of its divisors is an integer number (18897660450).

Almost surely, 2^161257202264 is an apocalyptic number.

It is an amenable number.

161257202264 is a deficient number, since it is larger than the sum of its proper divisors (141105364936).

161257202264 is a wasteful number, since it uses less digits than its factorization.

161257202264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354202 (or 354198 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 161257202264 in words is "one hundred sixty-one billion, two hundred fifty-seven million, two hundred two thousand, two hundred sixty-four".