155905266988 has 6 divisors (see below), whose sum is σ = 272834217236. Its totient is φ = 77952633492.

The previous prime is 155905266971. The next prime is 155905267019. The reversal of 155905266988 is 889662509551.

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 as a sum of consecutive naturals, namely, 19488158370 + ... + 19488158377.

Almost surely, 2^155905266988 is an apocalyptic number.

It is an amenable number.

155905266988 is a deficient number, since it is larger than the sum of its proper divisors (116928950248).

155905266988 is a wasteful number, since it uses less digits than its factorization.

155905266988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38976316751 (or 38976316749 counting only the distinct ones).

The product of its (nonzero) digits is 46656000, while the sum is 64.

The spelling of 155905266988 in words is "one hundred fifty-five billion, nine hundred five million, two hundred sixty-six thousand, nine hundred eighty-eight".