6172100520 has 32 divisors (see below), whose sum is σ = 18516301920. Its totient is φ = 1645893440.

The previous prime is 6172100509. The next prime is 6172100521. The reversal of 6172100520 is 250012716.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (6172100521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25716966 + ... + 25717205.

It is an arithmetic number, because the mean of its divisors is an integer number (578634435).

Almost surely, 2^6172100520 is an apocalyptic number.

6172100520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6172100520 is an abundant number, since it is smaller than the sum of its proper divisors (12344201400).

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

6172100520 is a wasteful number, since it uses less digits than its factorization.

6172100520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51434185 (or 51434181 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 6172100520 is about 78562.7171118718. The cubic root of 6172100520 is about 1834.3308218849.

The spelling of 6172100520 in words is "six billion, one hundred seventy-two million, one hundred thousand, five hundred twenty".