21082761259356 has 48 divisors (see below), whose sum is σ = 50995665100800. Its totient is φ = 6771090981312.

The previous prime is 21082761259349. The next prime is 21082761259363. The reversal of 21082761259356 is 65395216728012.

It is an interprime number because it is at equal distance from previous prime (21082761259349) and next prime (21082761259363).

It is a junction number, because it is equal to n+sod(n) for n = 21082761259296 and 21082761259305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63071980 + ... + 63405363.

It is an arithmetic number, because the mean of its divisors is an integer number (1062409689600).

Almost surely, 2^{21082761259356} is an apocalyptic number.

It is an amenable number.

21082761259356 is an abundant number, since it is smaller than the sum of its proper divisors (29912903841444).

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

21082761259356 is a wasteful number, since it uses less digits than its factorization.

21082761259356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126477858 (or 126477856 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 21082761259356 in words is "twenty-one trillion, eighty-two billion, seven hundred sixty-one million, two hundred fifty-nine thousand, three hundred fifty-six".