87701637601 has 2 divisors, whose sum is σ = 87701637602. Its totient is φ = 87701637600.

The previous prime is 87701637593. The next prime is 87701637607. The reversal of 87701637601 is 10673610778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73089663201 + 14611974400 = 270351^2 + 120880^2 .

It is a cyclic number.

It is not a de Polignac number, because 87701637601 - 2³ = 87701637593 is a prime.

It is not a weakly prime, because it can be changed into another prime (87701637607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43850818800 + 43850818801.

It is an arithmetic number, because the mean of its divisors is an integer number (43850818801).

Almost surely, 2^87701637601 is an apocalyptic number.

It is an amenable number.

87701637601 is a deficient number, since it is larger than the sum of its proper divisors (1).

87701637601 is an equidigital number, since it uses as much as digits as its factorization.

87701637601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 46.

The spelling of 87701637601 in words is "eighty-seven billion, seven hundred one million, six hundred thirty-seven thousand, six hundred one".