27630632431 has 4 divisors (see below), whose sum is σ = 27634243000. Its totient is φ = 27627021864.

The previous prime is 27630632429. The next prime is 27630632437. The reversal of 27630632431 is 13423603672.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27630632431 - 2¹ = 27630632429 is a prime.

It is a super-2 number, since 2×27630632431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27630632437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1793781 + ... + 1809118.

It is an arithmetic number, because the mean of its divisors is an integer number (6908560750).

Almost surely, 2^27630632431 is an apocalyptic number.

27630632431 is a deficient number, since it is larger than the sum of its proper divisors (3610569).

27630632431 is an equidigital number, since it uses as much as digits as its factorization.

27630632431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610568.

The product of its (nonzero) digits is 108864, while the sum is 37.

The spelling of 27630632431 in words is "twenty-seven billion, six hundred thirty million, six hundred thirty-two thousand, four hundred thirty-one".