213767794272 has 48 divisors (see below), whose sum is σ = 561578149440. Its totient is φ = 71200351872.

The previous prime is 213767794259. The next prime is 213767794283. The reversal of 213767794272 is 272497767312.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×213767794272² (a number of 23 digits) contains 22 as substring.

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, 744622 + ... + 990957.

It is an arithmetic number, because the mean of its divisors is an integer number (11699544780).

Almost surely, 2^213767794272 is an apocalyptic number.

It is an amenable number.

213767794272 is an abundant number, since it is smaller than the sum of its proper divisors (347810355168).

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

213767794272 is a wasteful number, since it uses less digits than its factorization.

213767794272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736875 (or 1736867 counting only the distinct ones).

The product of its digits is 12446784, while the sum is 57.

The spelling of 213767794272 in words is "two hundred thirteen billion, seven hundred sixty-seven million, seven hundred ninety-four thousand, two hundred seventy-two".