212252765784 has 16 divisors (see below), whose sum is σ = 530631914520. Its totient is φ = 70750921920.

The previous prime is 212252765773. The next prime is 212252765827. The reversal of 212252765784 is 487567252212.

It is a super-2 number, since 2×212252765784² (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 3 ways as a sum of consecutive naturals, for example, 4421932597 + ... + 4421932644.

Almost surely, 2^212252765784 is an apocalyptic number.

212252765784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212252765784 is an abundant number, since it is smaller than the sum of its proper divisors (318379148736).

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

212252765784 is a wasteful number, since it uses less digits than its factorization.

212252765784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8843865250 (or 8843865246 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 51.

The spelling of 212252765784 in words is "two hundred twelve billion, two hundred fifty-two million, seven hundred sixty-five thousand, seven hundred eighty-four".