213342863786 has 16 divisors (see below), whose sum is σ = 345032952264. Its totient is φ = 98351030784.

The previous prime is 213342863779. The next prime is 213342863827. The reversal of 213342863786 is 687368243312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 177742344025 + 35600519761 = 421595^2 + 188681^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4765055 + ... + 4809618.

Almost surely, 2^213342863786 is an apocalyptic number.

213342863786 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

213342863786 is a deficient number, since it is larger than the sum of its proper divisors (131690088478).

213342863786 is a wasteful number, since it uses less digits than its factorization.

213342863786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9575545.

The product of its digits is 6967296, while the sum is 53.

The spelling of 213342863786 in words is "two hundred thirteen billion, three hundred forty-two million, eight hundred sixty-three thousand, seven hundred eighty-six".