26521933872 has 80 divisors (see below), whose sum is σ = 78324986880. Its totient is φ = 7575553536.

The previous prime is 26521933849. The next prime is 26521933901. The reversal of 26521933872 is 27833912562.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 1472473 + ... + 1490375.

It is an arithmetic number, because the mean of its divisors is an integer number (979062336).

Almost surely, 2^26521933872 is an apocalyptic number.

It is an amenable number.

26521933872 is an abundant number, since it is smaller than the sum of its proper divisors (51803053008).

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

26521933872 is a wasteful number, since it uses less digits than its factorization.

26521933872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22330 (or 22324 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The spelling of 26521933872 in words is "twenty-six billion, five hundred twenty-one million, nine hundred thirty-three thousand, eight hundred seventy-two".