26664158840 has 64 divisors (see below), whose sum is σ = 66425304960. Its totient is φ = 9551329920.

The previous prime is 26664158813. The next prime is 26664158869. The reversal of 26664158840 is 4885146662.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

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, 422762 + ... + 481721.

It is an arithmetic number, because the mean of its divisors is an integer number (1037895390).

Almost surely, 2^26664158840 is an apocalyptic number.

26664158840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26664158840 is an abundant number, since it is smaller than the sum of its proper divisors (39761146120).

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

26664158840 is a wasteful number, since it uses less digits than its factorization.

26664158840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904572 (or 904568 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 50.

The spelling of 26664158840 in words is "twenty-six billion, six hundred sixty-four million, one hundred fifty-eight thousand, eight hundred forty".