21132864265268 has 12 divisors (see below), whose sum is σ = 42265728530592. Its totient is φ = 9056941827960.

The previous prime is 21132864265243. The next prime is 21132864265283. The reversal of 21132864265268 is 86256246823112.

21132864265268 is an admirable number.

It is a super-2 number, since 2×21132864265268² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) 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 3 ways as a sum of consecutive naturals, for example, 377372576138 + ... + 377372576193.

It is an arithmetic number, because the mean of its divisors is an integer number (3522144044216).

Almost surely, 2^{21132864265268} is an apocalyptic number.

21132864265268 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21132864265268 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21132864265268 is a wasteful number, since it uses less digits than its factorization.

21132864265268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754745152342 (or 754745152340 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 56.

The spelling of 21132864265268 in words is "twenty-one trillion, one hundred thirty-two billion, eight hundred sixty-four million, two hundred sixty-five thousand, two hundred sixty-eight".