21437475105375 has 96 divisors (see below), whose sum is σ = 46763240105088. Its totient is φ = 9223518643200.

The previous prime is 21437475105353. The next prime is 21437475105407. The reversal of 21437475105375 is 57350157473412.

21437475105375 is a `hidden beast` number, since 2 + 1 + 4 + 3 + 7 + 4 + 7 + 510 + 53 + 75 = 666.

It is not a de Polignac number, because 21437475105375 - 2¹² = 21437475101279 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 79931392 + ... + 80199141.

It is an arithmetic number, because the mean of its divisors is an integer number (487117084428).

Almost surely, 2^{21437475105375} is an apocalyptic number.

21437475105375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21437475105375 is an abundant number, since it is smaller than the sum of its proper divisors (25325764999713).

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

21437475105375 is a wasteful number, since it uses less digits than its factorization.

21437475105375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160130578 (or 160130565 counting only the distinct ones).

The product of its (nonzero) digits is 12348000, while the sum is 54.

The spelling of 21437475105375 in words is "twenty-one trillion, four hundred thirty-seven billion, four hundred seventy-five million, one hundred five thousand, three hundred seventy-five".