155720165707150 has 24 divisors (see below), whose sum is σ = 315970372599624. Its totient is φ = 56625514802400.

The previous prime is 155720165707091. The next prime is 155720165707153. The reversal of 155720165707150 is 51707561027551.

It is a super-2 number, since 2×155720165707150² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155720165707153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141563786457 + ... + 141563787556.

It is an arithmetic number, because the mean of its divisors is an integer number (13165432191651).

Almost surely, 2^{155720165707150} is an apocalyptic number.

155720165707150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155720165707150 is an abundant number, since it is smaller than the sum of its proper divisors (160250206892474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155720165707150 is a wasteful number, since it uses less digits than its factorization.

155720165707150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283127574036 (or 283127574031 counting only the distinct ones).

The product of its (nonzero) digits is 2572500, while the sum is 52.

The spelling of 155720165707150 in words is "one hundred fifty-five trillion, seven hundred twenty billion, one hundred sixty-five million, seven hundred seven thousand, one hundred fifty".