21426876675 has 96 divisors (see below), whose sum is σ = 40569754560. Its totient is φ = 11079244800.

The previous prime is 21426876649. The next prime is 21426876739. The reversal of 21426876675 is 57667862412.

It is a happy number.

It is not a de Polignac number, because 21426876675 - 2¹³ = 21426868483 is a prime.

It is a super-2 number, since 2×21426876675² (a number of 21 digits) contains 22 as substring.

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, 7815805 + ... + 7818545.

It is an arithmetic number, because the mean of its divisors is an integer number (422601610).

Almost surely, 2^21426876675 is an apocalyptic number.

21426876675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21426876675 is a deficient number, since it is larger than the sum of its proper divisors (19142877885).

21426876675 is a wasteful number, since it uses less digits than its factorization.

21426876675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110 (or 3099 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 21426876675 in words is "twenty-one billion, four hundred twenty-six million, eight hundred seventy-six thousand, six hundred seventy-five".