86650836886521 has 24 divisors (see below), whose sum is σ = 128085021480416. Its totient is φ = 56418536119680.

The previous prime is 86650836886519. The next prime is 86650836886529. The reversal of 86650836886521 is 12568863805668.

It is a happy number.

86650836886521 is a `hidden beast` number, since 8 + 6 + 6 + 508 + 3 + 68 + 8 + 6 + 52 + 1 = 666.

It is not a de Polignac number, because 86650836886521 - 2¹ = 86650836886519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86650836886521.

It is not an unprimeable number, because it can be changed into a prime (86650836886529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6290560 + ... + 14590161.

Almost surely, 2^{86650836886521} is an apocalyptic number.

It is an amenable number.

86650836886521 is a deficient number, since it is larger than the sum of its proper divisors (41434184593895).

86650836886521 is a wasteful number, since it uses less digits than its factorization.

86650836886521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20891493 (or 20891490 counting only the distinct ones).

The product of its (nonzero) digits is 796262400, while the sum is 72.

The spelling of 86650836886521 in words is "eighty-six trillion, six hundred fifty billion, eight hundred thirty-six million, eight hundred eighty-six thousand, five hundred twenty-one".