172077601506 has 16 divisors (see below), whose sum is σ = 345397643904. Its totient is φ = 57152127024.

The previous prime is 172077601489. The next prime is 172077601517. The reversal of 172077601506 is 605106770271.

It is a super-2 number, since 2×172077601506² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

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 in 7 ways as a sum of consecutive naturals, for example, 51766570 + ... + 51769893.

It is an arithmetic number, because the mean of its divisors is an integer number (21587352744).

Almost surely, 2^172077601506 is an apocalyptic number.

172077601506 is an abundant number, since it is smaller than the sum of its proper divisors (173320042398).

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

172077601506 is a wasteful number, since it uses less digits than its factorization.

172077601506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103536745.

The product of its (nonzero) digits is 123480, while the sum is 42.

The spelling of 172077601506 in words is "one hundred seventy-two billion, seventy-seven million, six hundred one thousand, five hundred six".