215366166253336 has 32 divisors (see below), whose sum is σ = 466068224011680. Its totient is φ = 91385926272000.

The previous prime is 215366166253313. The next prime is 215366166253349. The reversal of 215366166253336 is 633352661663512.

It is a super-2 number, since 2×215366166253336² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19038728985 + ... + 19038740296.

It is an arithmetic number, because the mean of its divisors is an integer number (14564632000365).

Almost surely, 2^{215366166253336} is an apocalyptic number.

It is an amenable number.

215366166253336 is an abundant number, since it is smaller than the sum of its proper divisors (250702057758344).

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

215366166253336 is a wasteful number, since it uses less digits than its factorization.

215366166253336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38077469395 (or 38077469391 counting only the distinct ones).

The product of its digits is 62985600, while the sum is 58.

The spelling of 215366166253336 in words is "two hundred fifteen trillion, three hundred sixty-six billion, one hundred sixty-six million, two hundred fifty-three thousand, three hundred thirty-six".