621177171090 has 64 divisors (see below), whose sum is σ = 1704175939584. Its totient is φ = 141952045248.

The previous prime is 621177171053. The next prime is 621177171103. The reversal of 621177171090 is 90171771126.

It is a super-2 number, since 2×621177171090² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 635227 + ... + 1282913.

It is an arithmetic number, because the mean of its divisors is an integer number (26627749056).

Almost surely, 2^621177171090 is an apocalyptic number.

621177171090 is an abundant number, since it is smaller than the sum of its proper divisors (1082998768494).

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

621177171090 is a wasteful number, since it uses less digits than its factorization.

621177171090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652271.

The product of its (nonzero) digits is 37044, while the sum is 42.

The spelling of 621177171090 in words is "six hundred twenty-one billion, one hundred seventy-seven million, one hundred seventy-one thousand, ninety".