26866047516 has 72 divisors (see below), whose sum is σ = 79551432576. Its totient is φ = 6978192480.

The previous prime is 26866047511. The next prime is 26866047547. The reversal of 26866047516 is 61574066862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26866047511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2070376 + ... + 2083311.

It is an arithmetic number, because the mean of its divisors is an integer number (1104881008).

Almost surely, 2^26866047516 is an apocalyptic number.

It is an amenable number.

26866047516 is an abundant number, since it is smaller than the sum of its proper divisors (52685385060).

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

26866047516 is a wasteful number, since it uses less digits than its factorization.

26866047516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4153719 (or 4153710 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 26866047516 in words is "twenty-six billion, eight hundred sixty-six million, forty-seven thousand, five hundred sixteen".