213172058768 has 20 divisors (see below), whose sum is σ = 413028793260. Its totient is φ = 106583983104.

The previous prime is 213172058711. The next prime is 213172058791. The reversal of 213172058768 is 867850271312.

It can be written as a sum of positive squares in 2 ways, for example, as 131414950144 + 81757108624 = 362512^2 + 285932^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073588 + ... + 1256556.

It is an arithmetic number, because the mean of its divisors is an integer number (20651439663).

Almost surely, 2^213172058768 is an apocalyptic number.

It is an amenable number.

213172058768 is a deficient number, since it is larger than the sum of its proper divisors (199856734492).

213172058768 is a wasteful number, since it uses less digits than its factorization.

213172058768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255794 (or 255788 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 213172058768 in words is "two hundred thirteen billion, one hundred seventy-two million, fifty-eight thousand, seven hundred sixty-eight".