21274355013 has 32 divisors (see below), whose sum is σ = 29012256000. Its totient is φ = 13863628800.

The previous prime is 21274354993. The next prime is 21274355041. The reversal of 21274355013 is 31055347212.

It is not a de Polignac number, because 21274355013 - 2²⁹ = 20737484101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21274355413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17309683 + ... + 17310911.

It is an arithmetic number, because the mean of its divisors is an integer number (906633000).

Almost surely, 2^21274355013 is an apocalyptic number.

It is an amenable number.

21274355013 is a deficient number, since it is larger than the sum of its proper divisors (7737900987).

21274355013 is a wasteful number, since it uses less digits than its factorization.

21274355013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933.

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 21274355013 in words is "twenty-one billion, two hundred seventy-four million, three hundred fifty-five thousand, thirteen".