87815872955911 has 2 divisors, whose sum is σ = 87815872955912. Its totient is φ = 87815872955910.

The previous prime is 87815872955893. The next prime is 87815872955917. The reversal of 87815872955911 is 11955927851878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87815872955911 - 2⁵ = 87815872955879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87815872955917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43907936477955 + 43907936477956.

It is an arithmetic number, because the mean of its divisors is an integer number (43907936477956).

Almost surely, 2^{87815872955911} is an apocalyptic number.

87815872955911 is a deficient number, since it is larger than the sum of its proper divisors (1).

87815872955911 is an equidigital number, since it uses as much as digits as its factorization.

87815872955911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032000, while the sum is 76.

The spelling of 87815872955911 in words is "eighty-seven trillion, eight hundred fifteen billion, eight hundred seventy-two million, nine hundred fifty-five thousand, nine hundred eleven".