87611063258881 has 2 divisors, whose sum is σ = 87611063258882. Its totient is φ = 87611063258880.

The previous prime is 87611063258863. The next prime is 87611063258893. The reversal of 87611063258881 is 18885236011678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52108056025281 + 35503007233600 = 7218591^2 + 5958440^2 .

It is a cyclic number.

It is not a de Polignac number, because 87611063258881 - 2³⁵ = 87576703520513 is a prime.

It is a super-2 number, since 2×87611063258881² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87611063258281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43805531629440 + 43805531629441.

It is an arithmetic number, because the mean of its divisors is an integer number (43805531629441).

Almost surely, 2^{87611063258881} is an apocalyptic number.

It is an amenable number.

87611063258881 is a deficient number, since it is larger than the sum of its proper divisors (1).

87611063258881 is an equidigital number, since it uses as much as digits as its factorization.

87611063258881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30965760, while the sum is 64.

The spelling of 87611063258881 in words is "eighty-seven trillion, six hundred eleven billion, sixty-three million, two hundred fifty-eight thousand, eight hundred eighty-one".