215550722050568 has 64 divisors (see below), whose sum is σ = 413035701534720. Its totient is φ = 105410983924800.

The previous prime is 215550722050567. The next prime is 215550722050637. The reversal of 215550722050568 is 865050227055512.

It is a super-2 number, since 2×215550722050568² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215550722050567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7120685273 + ... + 7120715543.

It is an arithmetic number, because the mean of its divisors is an integer number (6453682836480).

Almost surely, 2^{215550722050568} is an apocalyptic number.

It is an amenable number.

215550722050568 is a deficient number, since it is larger than the sum of its proper divisors (197484979484152).

215550722050568 is a wasteful number, since it uses less digits than its factorization.

215550722050568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42498 (or 42494 counting only the distinct ones).

The product of its (nonzero) digits is 8400000, while the sum is 53.

The spelling of 215550722050568 in words is "two hundred fifteen trillion, five hundred fifty billion, seven hundred twenty-two million, fifty thousand, five hundred sixty-eight".