213895690344 has 144 divisors (see below), whose sum is σ = 703294020000. Its totient is φ = 57518129664.

The previous prime is 213895690319. The next prime is 213895690357. The reversal of 213895690344 is 443096598312.

213895690344 is a `hidden beast` number, since 2 + 1 + 38 + 9 + 569 + 0 + 3 + 44 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 588594 + ... + 879905.

It is an arithmetic number, because the mean of its divisors is an integer number (4883986250).

Almost surely, 2^213895690344 is an apocalyptic number.

213895690344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213895690344 is an abundant number, since it is smaller than the sum of its proper divisors (489398329656).

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

213895690344 is a wasteful number, since it uses less digits than its factorization.

213895690344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468552 (or 1468528 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 213895690344 in words is "two hundred thirteen billion, eight hundred ninety-five million, six hundred ninety thousand, three hundred forty-four".