21269344853496 has 32 divisors (see below), whose sum is σ = 53260105012560. Its totient is φ = 7078215900672.

The previous prime is 21269344853441. The next prime is 21269344853521. The reversal of 21269344853496 is 69435844396212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722842305 + ... + 722871728.

Almost surely, 2^{21269344853496} is an apocalyptic number.

It is an amenable number.

21269344853496 is an abundant number, since it is smaller than the sum of its proper divisors (31990760159064).

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

21269344853496 is a wasteful number, since it uses less digits than its factorization.

21269344853496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445714655 (or 1445714651 counting only the distinct ones).

The product of its digits is 268738560, while the sum is 66.

The spelling of 21269344853496 in words is "twenty-one trillion, two hundred sixty-nine billion, three hundred forty-four million, eight hundred fifty-three thousand, four hundred ninety-six".