213693688488 has 64 divisors (see below), whose sum is σ = 610692341760. Its totient is φ = 61041445056.

The previous prime is 213693688469. The next prime is 213693688489. The reversal of 213693688488 is 884886396312.

It is a super-2 number, since 2×213693688488² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213693688489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607281 + ... + 892287.

It is an arithmetic number, because the mean of its divisors is an integer number (9542067840).

Almost surely, 2^213693688488 is an apocalyptic number.

213693688488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

213693688488 is an abundant number, since it is smaller than the sum of its proper divisors (396998653272).

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

213693688488 is a wasteful number, since it uses less digits than its factorization.

213693688488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289486 (or 289482 counting only the distinct ones).

The product of its digits is 95551488, while the sum is 66.

The spelling of 213693688488 in words is "two hundred thirteen billion, six hundred ninety-three million, six hundred eighty-eight thousand, four hundred eighty-eight".