87696087241993 has 2 divisors, whose sum is σ = 87696087241994. Its totient is φ = 87696087241992.

The previous prime is 87696087241979. The next prime is 87696087242017. The reversal of 87696087241993 is 39914278069678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46158938757369 + 41537148484624 = 6794037^2 + 6444932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87696087241993 is a prime.

It is a super-2 number, since 2×87696087241993² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87696087241943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43848043620996 + 43848043620997.

It is an arithmetic number, because the mean of its divisors is an integer number (43848043620997).

Almost surely, 2^{87696087241993} is an apocalyptic number.

It is an amenable number.

87696087241993 is a deficient number, since it is larger than the sum of its proper divisors (1).

87696087241993 is an equidigital number, since it uses as much as digits as its factorization.

87696087241993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975228416, while the sum is 79.

The spelling of 87696087241993 in words is "eighty-seven trillion, six hundred ninety-six billion, eighty-seven million, two hundred forty-one thousand, nine hundred ninety-three".