86650891553 has 2 divisors, whose sum is σ = 86650891554. Its totient is φ = 86650891552.

The previous prime is 86650891549. The next prime is 86650891651. The reversal of 86650891553 is 35519805668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64837964689 + 21812926864 = 254633^2 + 147692^2 .

It is a cyclic number.

It is not a de Polignac number, because 86650891553 - 2² = 86650891549 is a prime.

It is not a weakly prime, because it can be changed into another prime (86650891513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43325445776 + 43325445777.

It is an arithmetic number, because the mean of its divisors is an integer number (43325445777).

Almost surely, 2^86650891553 is an apocalyptic number.

It is an amenable number.

86650891553 is a deficient number, since it is larger than the sum of its proper divisors (1).

86650891553 is an equidigital number, since it uses as much as digits as its factorization.

86650891553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776000, while the sum is 56.

The spelling of 86650891553 in words is "eighty-six billion, six hundred fifty million, eight hundred ninety-one thousand, five hundred fifty-three".