213656979744 has 192 divisors, whose sum is σ = 710579278080. Its totient is φ = 61873459200.

The previous prime is 213656979733. The next prime is 213656979751. The reversal of 213656979744 is 447979656312.

213656979744 is a `hidden beast` number, since 21 + 3 + 6 + 569 + 7 + 9 + 7 + 44 = 666.

213656979744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368532 + ... + 750419.

It is an arithmetic number, because the mean of its divisors is an integer number (3700933740).

Almost surely, 2^213656979744 is an apocalyptic number.

213656979744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213656979744 is an abundant number, since it is smaller than the sum of its proper divisors (496922298336).

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

213656979744 is a wasteful number, since it uses less digits than its factorization.

213656979744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119000 (or 1118986 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 213656979744 in words is "two hundred thirteen billion, six hundred fifty-six million, nine hundred seventy-nine thousand, seven hundred forty-four".