213739086756 has 72 divisors (see below), whose sum is σ = 563519073600. Its totient is φ = 62906473344.

The previous prime is 213739086751. The next prime is 213739086763. The reversal of 213739086756 is 657680937312.

It is a junction number, because it is equal to n+sod(n) for n = 213739086696 and 213739086705.

It is not an unprimeable number, because it can be changed into a prime (213739086751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2244531 + ... + 2337818.

It is an arithmetic number, because the mean of its divisors is an integer number (7826653800).

Almost surely, 2^213739086756 is an apocalyptic number.

213739086756 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

213739086756 is an abundant number, since it is smaller than the sum of its proper divisors (349779986844).

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

213739086756 is a wasteful number, since it uses less digits than its factorization.

213739086756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4582405 (or 4582390 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 57.

The spelling of 213739086756 in words is "two hundred thirteen billion, seven hundred thirty-nine million, eighty-six thousand, seven hundred fifty-six".