87542166713 has 2 divisors, whose sum is σ = 87542166714. Its totient is φ = 87542166712.

The previous prime is 87542166671. The next prime is 87542166727. The reversal of 87542166713 is 31766124578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69112203664 + 18429963049 = 262892^2 + 135757^2 .

It is a cyclic number.

It is not a de Polignac number, because 87542166713 - 2⁸ = 87542166457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (87542165713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43771083356 + 43771083357.

It is an arithmetic number, because the mean of its divisors is an integer number (43771083357).

Almost surely, 2^87542166713 is an apocalyptic number.

It is an amenable number.

87542166713 is a deficient number, since it is larger than the sum of its proper divisors (1).

87542166713 is an equidigital number, since it uses as much as digits as its factorization.

87542166713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 50.

The spelling of 87542166713 in words is "eighty-seven billion, five hundred forty-two million, one hundred sixty-six thousand, seven hundred thirteen".