213037745613 has 64 divisors (see below), whose sum is σ = 374199091200. Its totient is φ = 104445063360.

The previous prime is 213037745587. The next prime is 213037745647. The reversal of 213037745613 is 316547730312.

It is a happy number.

It is not a de Polignac number, because 213037745613 - 2¹² = 213037741517 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213037745693) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1062028 + ... + 1246586.

It is an arithmetic number, because the mean of its divisors is an integer number (5846860800).

Almost surely, 2^213037745613 is an apocalyptic number.

It is an amenable number.

213037745613 is a deficient number, since it is larger than the sum of its proper divisors (161161345587).

213037745613 is a wasteful number, since it uses less digits than its factorization.

213037745613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184862.

The product of its (nonzero) digits is 317520, while the sum is 42.

The spelling of 213037745613 in words is "two hundred thirteen billion, thirty-seven million, seven hundred forty-five thousand, six hundred thirteen".