26865863364 has 24 divisors (see below), whose sum is σ = 62735234688. Its totient is φ = 8948399200.

The previous prime is 26865863363. The next prime is 26865863369. The reversal of 26865863364 is 46336856862.

It is a super-2 number, since 2×26865863364² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26865863363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844812 + ... + 876035.

It is an arithmetic number, because the mean of its divisors is an integer number (2613968112).

Almost surely, 2^26865863364 is an apocalyptic number.

It is an amenable number.

26865863364 is an abundant number, since it is smaller than the sum of its proper divisors (35869371324).

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

26865863364 is a wasteful number, since it uses less digits than its factorization.

26865863364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722155 (or 1722153 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 57.

The spelling of 26865863364 in words is "twenty-six billion, eight hundred sixty-five million, eight hundred sixty-three thousand, three hundred sixty-four".