26821031868472 has 64 divisors (see below), whose sum is σ = 51079793149440. Its totient is φ = 13200379248000.

The previous prime is 26821031868469. The next prime is 26821031868479. The reversal of 26821031868472 is 27486813012862.

It is a super-2 number, since 2×26821031868472² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26821031868479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 921638722 + ... + 921667822.

It is an arithmetic number, because the mean of its divisors is an integer number (798121767960).

Almost surely, 2^{26821031868472} is an apocalyptic number.

It is an amenable number.

26821031868472 is a deficient number, since it is larger than the sum of its proper divisors (24258761280968).

26821031868472 is a wasteful number, since it uses less digits than its factorization.

26821031868472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31732 (or 31728 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 58.

The spelling of 26821031868472 in words is "twenty-six trillion, eight hundred twenty-one billion, thirty-one million, eight hundred sixty-eight thousand, four hundred seventy-two".