21352900104 has 64 divisors (see below), whose sum is σ = 59342976000. Its totient is φ = 7114109760.

The previous prime is 21352900073. The next prime is 21352900141. The reversal of 21352900104 is 40100925312.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 432562 + ... + 479390.

It is an arithmetic number, because the mean of its divisors is an integer number (927234000).

Almost surely, 2^21352900104 is an apocalyptic number.

21352900104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21352900104 is an abundant number, since it is smaller than the sum of its proper divisors (37990075896).

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

21352900104 is a wasteful number, since it uses less digits than its factorization.

21352900104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48955 (or 48945 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 21352900104 in words is "twenty-one billion, three hundred fifty-two million, nine hundred thousand, one hundred four".