27764322651 has 24 divisors (see below), whose sum is σ = 43780589216. Its totient is φ = 16851680640.

The previous prime is 27764322623. The next prime is 27764322659. The reversal of 27764322651 is 15622346772.

27764322651 is a `hidden beast` number, since 277 + 6 + 4 + 322 + 6 + 51 = 666.

It is not a de Polignac number, because 27764322651 - 2²⁷ = 27630104923 is a prime.

It is a super-2 number, since 2×27764322651² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27764322597 and 27764322606.

It is not an unprimeable number, because it can be changed into a prime (27764322659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1616815 + ... + 1633896.

Almost surely, 2^27764322651 is an apocalyptic number.

27764322651 is a deficient number, since it is larger than the sum of its proper divisors (16016266565).

27764322651 is a wasteful number, since it uses less digits than its factorization.

27764322651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250803 (or 3250800 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The spelling of 27764322651 in words is "twenty-seven billion, seven hundred sixty-four million, three hundred twenty-two thousand, six hundred fifty-one".