213492553857 has 48 divisors (see below), whose sum is σ = 374948982720. Its totient is φ = 115368883200.

The previous prime is 213492553853. The next prime is 213492553871. The reversal of 213492553857 is 758355294312.

213492553857 is a `hidden beast` number, since 2 + 1 + 3 + 4 + 9 + 2 + 553 + 85 + 7 = 666.

It is not a de Polignac number, because 213492553857 - 2² = 213492553853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213492553853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3306244 + ... + 3370197.

It is an arithmetic number, because the mean of its divisors is an integer number (7811437140).

Almost surely, 2^213492553857 is an apocalyptic number.

It is an amenable number.

213492553857 is a deficient number, since it is larger than the sum of its proper divisors (161456428863).

213492553857 is a wasteful number, since it uses less digits than its factorization.

213492553857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6676494 (or 6676491 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 54.

The spelling of 213492553857 in words is "two hundred thirteen billion, four hundred ninety-two million, five hundred fifty-three thousand, eight hundred fifty-seven".