213713222638 has 8 divisors (see below), whose sum is σ = 320628746088. Its totient is φ = 106836973944.

The previous prime is 213713222623. The next prime is 213713222647. The reversal of 213713222638 is 836222317312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 213713222638.

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, 9805081 + ... + 9826852.

It is an arithmetic number, because the mean of its divisors is an integer number (40078593261).

Almost surely, 2^213713222638 is an apocalyptic number.

213713222638 is a deficient number, since it is larger than the sum of its proper divisors (106915523450).

213713222638 is a wasteful number, since it uses less digits than its factorization.

213713222638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19637378.

The product of its digits is 145152, while the sum is 40.

The spelling of 213713222638 in words is "two hundred thirteen billion, seven hundred thirteen million, two hundred twenty-two thousand, six hundred thirty-eight".