27977146937 has 2 divisors, whose sum is σ = 27977146938. Its totient is φ = 27977146936.

The previous prime is 27977146927. The next prime is 27977147083. The reversal of 27977146937 is 73964177972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14142917776 + 13834229161 = 118924^2 + 117619^2 .

It is a cyclic number.

It is not a de Polignac number, because 27977146937 - 2⁴ = 27977146921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27977146937.

It is not a weakly prime, because it can be changed into another prime (27977146927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13988573468 + 13988573469.

It is an arithmetic number, because the mean of its divisors is an integer number (13988573469).

Almost surely, 2^27977146937 is an apocalyptic number.

It is an amenable number.

27977146937 is a deficient number, since it is larger than the sum of its proper divisors (1).

27977146937 is an equidigital number, since it uses as much as digits as its factorization.

27977146937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28005264, while the sum is 62.

The spelling of 27977146937 in words is "twenty-seven billion, nine hundred seventy-seven million, one hundred forty-six thousand, nine hundred thirty-seven".