2015612227251 has 40 divisors (see below), whose sum is σ = 3456142689120. Its totient is φ = 1146748741632.

The previous prime is 2015612227169. The next prime is 2015612227253. The reversal of 2015612227251 is 1527222165102.

2015612227251 is a `hidden beast` number, since 2 + 0 + 1 + 561 + 2 + 22 + 72 + 5 + 1 = 666.

It is not a de Polignac number, because 2015612227251 - 2⁹ = 2015612226739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2015612227253) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7631886 + ... + 7891571.

It is an arithmetic number, because the mean of its divisors is an integer number (86403567228).

Almost surely, 2^{2015612227251} is an apocalyptic number.

2015612227251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2015612227251 is a deficient number, since it is larger than the sum of its proper divisors (1440530461869).

2015612227251 is a wasteful number, since it uses less digits than its factorization.

2015612227251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15523705 (or 15523696 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 2015612227251 in words is "two trillion, fifteen billion, six hundred twelve million, two hundred twenty-seven thousand, two hundred fifty-one".