10215565100 has 36 divisors (see below), whose sum is σ = 23872992864. Its totient is φ = 3771900480.

The previous prime is 10215565093. The next prime is 10215565111. The reversal of 10215565100 is 156551201.

10215565100 = T₂₈₅₇₅ + T₂₈₅₇₆ + ... + T₂₈₅₉₉.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 10215565100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3927764 + ... + 3930363.

Almost surely, 2^10215565100 is an apocalyptic number.

10215565100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10215565100 is an abundant number, since it is smaller than the sum of its proper divisors (13657427764).

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

10215565100 is a wasteful number, since it uses less digits than its factorization.

10215565100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7858154 (or 7858147 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 10215565100 in words is "ten billion, two hundred fifteen million, five hundred sixty-five thousand, one hundred".