47660047657 has 2 divisors, whose sum is σ = 47660047658. Its totient is φ = 47660047656.

The previous prime is 47660047637. The next prime is 47660047703. The reversal of 47660047657 is 75674006674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34604928576 + 13055119081 = 186024^2 + 114259^2 .

It is a cyclic number.

It is not a de Polignac number, because 47660047657 - 2¹⁵ = 47660014889 is a prime.

It is a super-2 number, since 2×47660047657² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47660047637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23830023828 + 23830023829.

It is an arithmetic number, because the mean of its divisors is an integer number (23830023829).

Almost surely, 2^47660047657 is an apocalyptic number.

It is an amenable number.

47660047657 is a deficient number, since it is larger than the sum of its proper divisors (1).

47660047657 is an equidigital number, since it uses as much as digits as its factorization.

47660047657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5927040, while the sum is 52.

The spelling of 47660047657 in words is "forty-seven billion, six hundred sixty million, forty-seven thousand, six hundred fifty-seven".