86538078121266 has 96 divisors (see below), whose sum is σ = 200662790393520. Its totient is φ = 26903003904000.

The previous prime is 86538078121249. The next prime is 86538078121273. The reversal of 86538078121266 is 66212187083568.

86538078121266 is a `hidden beast` number, since 8 + 6 + 5 + 380 + 78 + 121 + 2 + 66 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 64880270219241 + 21657807902025 = 8054829^2 + 4653795^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17855515 + ... + 22178718.

Almost surely, 2^{86538078121266} is an apocalyptic number.

86538078121266 is an abundant number, since it is smaller than the sum of its proper divisors (114124712272254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86538078121266 is a wasteful number, since it uses less digits than its factorization.

86538078121266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40034412 (or 40034409 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 86538078121266 in words is "eighty-six trillion, five hundred thirty-eight billion, seventy-eight million, one hundred twenty-one thousand, two hundred sixty-six".