26865855900 has 144 divisors (see below), whose sum is σ = 93012623200. Its totient is φ = 6613125120.

The previous prime is 26865855869. The next prime is 26865855901. The reversal of 26865855900 is 955856862.

26865855900 is a `hidden beast` number, since 2 + 6 + 8 + 6 + 585 + 59 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26865855901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 347605 + ... + 417804.

Almost surely, 2^26865855900 is an apocalyptic number.

26865855900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26865855900 is an abundant number, since it is smaller than the sum of its proper divisors (66146767300).

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

26865855900 is a wasteful number, since it uses less digits than its factorization.

26865855900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765445 (or 765432 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 26865855900 in words is "twenty-six billion, eight hundred sixty-five million, eight hundred fifty-five thousand, nine hundred".