211535640542232 has 64 divisors (see below), whose sum is σ = 606553808025600. Its totient is φ = 68237303398560.

The previous prime is 211535640542227. The next prime is 211535640542299. The reversal of 211535640542232 is 232245046535112.

211535640542232 is a `hidden beast` number, since 2 + 1 + 1 + 5 + 3 + 5 + 6 + 405 + 4 + 2 + 232 = 666.

It is a super-2 number, since 2×211535640542232² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15795665388 + ... + 15795678779.

It is an arithmetic number, because the mean of its divisors is an integer number (9477403250400).

Almost surely, 2^{211535640542232} is an apocalyptic number.

It is an amenable number.

211535640542232 is an abundant number, since it is smaller than the sum of its proper divisors (395018167483368).

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

211535640542232 is a wasteful number, since it uses less digits than its factorization.

211535640542232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31591344213 (or 31591344203 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 211535640542232 in words is "two hundred eleven trillion, five hundred thirty-five billion, six hundred forty million, five hundred forty-two thousand, two hundred thirty-two".