215163100726155 has 48 divisors (see below), whose sum is σ = 373376360448000. Its totient is φ = 114622285377600.

The previous prime is 215163100726141. The next prime is 215163100726169. The reversal of 215163100726155 is 551627001361512.

215163100726155 is a `hidden beast` number, since 2 + 1 + 5 + 1 + 631 + 0 + 0 + 7 + 2 + 6 + 1 + 5 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (215163100726141) and next prime (215163100726169).

It is not a de Polignac number, because 215163100726155 - 2⁴ = 215163100726139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 215163100726155.

It is an unprimeable number.

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, 960441846 + ... + 960665844.

It is an arithmetic number, because the mean of its divisors is an integer number (7778674176000).

Almost surely, 2^{215163100726155} is an apocalyptic number.

215163100726155 is a deficient number, since it is larger than the sum of its proper divisors (158213259721845).

215163100726155 is a wasteful number, since it uses less digits than its factorization.

215163100726155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248352 (or 248349 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 215163100726155 in words is "two hundred fifteen trillion, one hundred sixty-three billion, one hundred million, seven hundred twenty-six thousand, one hundred fifty-five".