215671147652755 has 8 divisors (see below), whose sum is σ = 270057784887072. Its totient is φ = 165035312986368.

The previous prime is 215671147652687. The next prime is 215671147652767. The reversal of 215671147652755 is 557256741176512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215671147652755 - 2³¹ = 215669000169107 is a prime.

It is a Duffinian 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, 937700641854 + ... + 937700642083.

It is an arithmetic number, because the mean of its divisors is an integer number (33757223110884).

Almost surely, 2^{215671147652755} is an apocalyptic number.

215671147652755 is a deficient number, since it is larger than the sum of its proper divisors (54386637234317).

215671147652755 is a wasteful number, since it uses less digits than its factorization.

215671147652755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875401283965.

The product of its digits is 123480000, while the sum is 64.

The spelling of 215671147652755 in words is "two hundred fifteen trillion, six hundred seventy-one billion, one hundred forty-seven million, six hundred fifty-two thousand, seven hundred fifty-five".