86279075261 has 2 divisors, whose sum is σ = 86279075262. Its totient is φ = 86279075260.

The previous prime is 86279075161. The next prime is 86279075303. The reversal of 86279075261 is 16257097268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72086880100 + 14192195161 = 268490^2 + 119131^2 .

It is a cyclic number.

It is not a de Polignac number, because 86279075261 - 2²² = 86274880957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86279075161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43139537630 + 43139537631.

It is an arithmetic number, because the mean of its divisors is an integer number (43139537631).

Almost surely, 2^86279075261 is an apocalyptic number.

It is an amenable number.

86279075261 is a deficient number, since it is larger than the sum of its proper divisors (1).

86279075261 is an equidigital number, since it uses as much as digits as its factorization.

86279075261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 86279075261 in words is "eighty-six billion, two hundred seventy-nine million, seventy-five thousand, two hundred sixty-one".