21296496375 has 384 divisors, whose sum is σ = 52242278400. Its totient is φ = 8449056000.

The previous prime is 21296496367. The next prime is 21296496383. The reversal of 21296496375 is 57369469212.

21296496375 is a `hidden beast` number, since 2 + 129 + 64 + 96 + 375 = 666.

It is an interprime number because it is at equal distance from previous prime (21296496367) and next prime (21296496383).

It is not a de Polignac number, because 21296496375 - 2³ = 21296496367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 41839621 + ... + 41840129.

It is an arithmetic number, because the mean of its divisors is an integer number (136047600).

Almost surely, 2^21296496375 is an apocalyptic number.

21296496375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21296496375 is an abundant number, since it is smaller than the sum of its proper divisors (30945782025).

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

21296496375 is a wasteful number, since it uses less digits than its factorization.

21296496375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 558 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 21296496375 in words is "twenty-one billion, two hundred ninety-six million, four hundred ninety-six thousand, three hundred seventy-five".