155200451172 has 24 divisors (see below), whose sum is σ = 389990877696. Its totient is φ = 47753984928.

The previous prime is 155200451129. The next prime is 155200451201. The reversal of 155200451172 is 271154002551.

155200451172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497437188 + ... + 497437499.

It is an arithmetic number, because the mean of its divisors is an integer number (16249619904).

Almost surely, 2^155200451172 is an apocalyptic number.

155200451172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155200451172 is an abundant number, since it is smaller than the sum of its proper divisors (234790426524).

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

155200451172 is a wasteful number, since it uses less digits than its factorization.

155200451172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994874707 (or 994874705 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 33.

The spelling of 155200451172 in words is "one hundred fifty-five billion, two hundred million, four hundred fifty-one thousand, one hundred seventy-two".