27964812552631 has 4 divisors (see below), whose sum is σ = 27967623379000. Its totient is φ = 27962001726264.

The previous prime is 27964812552629. The next prime is 27964812552641. The reversal of 27964812552631 is 13625521846972.

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 27964812552631 - 2¹ = 27964812552629 is a prime.

It is a super-2 number, since 2×27964812552631² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27964812552631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27964812552641) 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, 1405398261 + ... + 1405418158.

It is an arithmetic number, because the mean of its divisors is an integer number (6991905844750).

Almost surely, 2^{27964812552631} is an apocalyptic number.

27964812552631 is a deficient number, since it is larger than the sum of its proper divisors (2810826369).

27964812552631 is an equidigital number, since it uses as much as digits as its factorization.

27964812552631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810826368.

The product of its digits is 43545600, while the sum is 61.

The spelling of 27964812552631 in words is "twenty-seven trillion, nine hundred sixty-four billion, eight hundred twelve million, five hundred fifty-two thousand, six hundred thirty-one".