27772660631 has 8 divisors (see below), whose sum is σ = 28366915584. Its totient is φ = 27178545240.

The previous prime is 27772660621. The next prime is 27772660667. The reversal of 27772660631 is 13606627772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27772660631 - 2⁶ = 27772660567 is a prime.

It is a super-2 number, since 2×27772660631² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27772660621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434006 + ... + 493868.

It is an arithmetic number, because the mean of its divisors is an integer number (3545864448).

Almost surely, 2^27772660631 is an apocalyptic number.

27772660631 is a deficient number, since it is larger than the sum of its proper divisors (594254953).

27772660631 is an equidigital number, since it uses as much as digits as its factorization.

27772660631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69781.

The product of its (nonzero) digits is 889056, while the sum is 47.

The spelling of 27772660631 in words is "twenty-seven billion, seven hundred seventy-two million, six hundred sixty thousand, six hundred thirty-one".