213812843274 has 24 divisors (see below), whose sum is σ = 463363986852. Its totient is φ = 71255128320.

The previous prime is 213812843269. The next prime is 213812843291. The reversal of 213812843274 is 472348218312.

213812843274 is a `hidden beast` number, since 2 + 138 + 12 + 8 + 432 + 74 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 154493805249 + 59319038025 = 393057^2 + 243555^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1234797 + ... + 1397264.

Almost surely, 2^213812843274 is an apocalyptic number.

213812843274 is an abundant number, since it is smaller than the sum of its proper divisors (249551143578).

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

213812843274 is a wasteful number, since it uses less digits than its factorization.

213812843274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636582 (or 2636579 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The spelling of 213812843274 in words is "two hundred thirteen billion, eight hundred twelve million, eight hundred forty-three thousand, two hundred seventy-four".