87671559737 has 2 divisors, whose sum is σ = 87671559738. Its totient is φ = 87671559736.

The previous prime is 87671559733. The next prime is 87671559739. The reversal of 87671559737 is 73795517678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86866362361 + 805197376 = 294731^2 + 28376^2 .

It is a cyclic number.

It is not a de Polignac number, because 87671559737 - 2² = 87671559733 is a prime.

Together with 87671559739, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87671559733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43835779868 + 43835779869.

It is an arithmetic number, because the mean of its divisors is an integer number (43835779869).

Almost surely, 2^87671559737 is an apocalyptic number.

It is an amenable number.

87671559737 is a deficient number, since it is larger than the sum of its proper divisors (1).

87671559737 is an equidigital number, since it uses as much as digits as its factorization.

87671559737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77792400, while the sum is 65.

The spelling of 87671559737 in words is "eighty-seven billion, six hundred seventy-one million, five hundred fifty-nine thousand, seven hundred thirty-seven".