27664376631 has 16 divisors (see below), whose sum is σ = 37515515520. Its totient is φ = 18128481120.

The previous prime is 27664376629. The next prime is 27664376633. The reversal of 27664376631 is 13667346672.

It is an interprime number because it is at equal distance from previous prime (27664376629) and next prime (27664376633).

It is not a de Polignac number, because 27664376631 - 2¹ = 27664376629 is a prime.

It is a super-2 number, since 2×27664376631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27664376633) 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, 229080 + ... + 328338.

It is an arithmetic number, because the mean of its divisors is an integer number (2344719720).

Almost surely, 2^27664376631 is an apocalyptic number.

27664376631 is a deficient number, since it is larger than the sum of its proper divisors (9851138889).

27664376631 is a wasteful number, since it uses less digits than its factorization.

27664376631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100846.

The product of its digits is 4572288, while the sum is 51.

The spelling of 27664376631 in words is "twenty-seven billion, six hundred sixty-four million, three hundred seventy-six thousand, six hundred thirty-one".