213700988664 has 128 divisors (see below), whose sum is σ = 661613184000. Its totient is φ = 63514824192.

The previous prime is 213700988591. The next prime is 213700988671. The reversal of 213700988664 is 466889007312.

It is a super-2 number, since 2×213700988664² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 213700988664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1461744 + ... + 1601279.

It is an arithmetic number, because the mean of its divisors is an integer number (5168853000).

Almost surely, 2^213700988664 is an apocalyptic number.

213700988664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213700988664 is an abundant number, since it is smaller than the sum of its proper divisors (447912195336).

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

213700988664 is a wasteful number, since it uses less digits than its factorization.

213700988664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3063074 (or 3063064 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 213700988664 in words is "two hundred thirteen billion, seven hundred million, nine hundred eighty-eight thousand, six hundred sixty-four".