155974272965 has 16 divisors (see below), whose sum is σ = 213920652672. Its totient is φ = 106947248064.

The previous prime is 155974272943. The next prime is 155974272977. The reversal of 155974272965 is 569272479551.

It is a cyclic number.

It is not a de Polignac number, because 155974272965 - 2⁶ = 155974272901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155974272898 and 155974272907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484202 + ... + 739188.

It is an arithmetic number, because the mean of its divisors is an integer number (13370040792).

Almost surely, 2^155974272965 is an apocalyptic number.

It is an amenable number.

155974272965 is a deficient number, since it is larger than the sum of its proper divisors (57946379707).

155974272965 is a wasteful number, since it uses less digits than its factorization.

155974272965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272476.

The product of its digits is 47628000, while the sum is 62.

The spelling of 155974272965 in words is "one hundred fifty-five billion, nine hundred seventy-four million, two hundred seventy-two thousand, nine hundred sixty-five".