161367136564 has 12 divisors (see below), whose sum is σ = 283312336384. Its totient is φ = 80420754744.

The previous prime is 161367136547. The next prime is 161367136577. The reversal of 161367136564 is 465631763161.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65702004 + ... + 65704459.

Almost surely, 2^161367136564 is an apocalyptic number.

It is an amenable number.

161367136564 is a deficient number, since it is larger than the sum of its proper divisors (121945199820).

161367136564 is a wasteful number, since it uses less digits than its factorization.

161367136564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131406774 (or 131406772 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 49.

The spelling of 161367136564 in words is "one hundred sixty-one billion, three hundred sixty-seven million, one hundred thirty-six thousand, five hundred sixty-four".