215127068805 has 32 divisors (see below), whose sum is σ = 417216136320. Its totient is φ = 104304032640.

The previous prime is 215127068749. The next prime is 215127068861. The reversal of 215127068805 is 508860721512.

215127068805 is a `hidden beast` number, since 2 + 1 + 512 + 70 + 68 + 8 + 0 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (215127068749) and next prime (215127068861).

It is not a de Polignac number, because 215127068805 - 2⁸ = 215127068549 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72431872 + ... + 72434841.

It is an arithmetic number, because the mean of its divisors is an integer number (13038004260).

Almost surely, 2^215127068805 is an apocalyptic number.

It is an amenable number.

215127068805 is a deficient number, since it is larger than the sum of its proper divisors (202089067515).

215127068805 is a wasteful number, since it uses less digits than its factorization.

215127068805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144866738 (or 144866732 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The spelling of 215127068805 in words is "two hundred fifteen billion, one hundred twenty-seven million, sixty-eight thousand, eight hundred five".