155411420165 has 16 divisors (see below), whose sum is σ = 198399792960. Its totient is φ = 116461067520.

The previous prime is 155411420137. The next prime is 155411420179. The reversal of 155411420165 is 561024114551.

It is not a de Polignac number, because 155411420165 - 2¹⁶ = 155411354629 is a prime.

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, 4314695 + ... + 4350564.

It is an arithmetic number, because the mean of its divisors is an integer number (12399987060).

Almost surely, 2^155411420165 is an apocalyptic number.

It is an amenable number.

155411420165 is a deficient number, since it is larger than the sum of its proper divisors (42988372795).

155411420165 is a wasteful number, since it uses less digits than its factorization.

155411420165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8665492.

The product of its (nonzero) digits is 24000, while the sum is 35.

The spelling of 155411420165 in words is "one hundred fifty-five billion, four hundred eleven million, four hundred twenty thousand, one hundred sixty-five".