213656562940 has 48 divisors (see below), whose sum is σ = 492827973120. Its totient is φ = 77444389440.

The previous prime is 213656562929. The next prime is 213656562941. The reversal of 213656562940 is 49265656312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213656562941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12214176 + ... + 12231655.

It is an arithmetic number, because the mean of its divisors is an integer number (10267249440).

Almost surely, 2^213656562940 is an apocalyptic number.

213656562940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213656562940 is an abundant number, since it is smaller than the sum of its proper divisors (279171410180).

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

213656562940 is a wasteful number, since it uses less digits than its factorization.

213656562940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24445882 (or 24445880 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 213656562940 in words is "two hundred thirteen billion, six hundred fifty-six million, five hundred sixty-two thousand, nine hundred forty".