26820475684 has 12 divisors (see below), whose sum is σ = 46939743900. Its totient is φ = 13409120288.

The previous prime is 26820475679. The next prime is 26820475687. The reversal of 26820475684 is 48657402862.

It can be written as a sum of positive squares in 2 ways, for example, as 20584214784 + 6236260900 = 143472^2 + 78970^2 .

It is not an unprimeable number, because it can be changed into a prime (26820475687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224179 + ... + 322330.

It is an arithmetic number, because the mean of its divisors is an integer number (3911645325).

Almost surely, 2^26820475684 is an apocalyptic number.

It is an amenable number.

26820475684 is a deficient number, since it is larger than the sum of its proper divisors (20119268216).

26820475684 is a wasteful number, since it uses less digits than its factorization.

26820475684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558782 (or 558780 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 52.

The spelling of 26820475684 in words is "twenty-six billion, eight hundred twenty million, four hundred seventy-five thousand, six hundred eighty-four".