86261177365865 has 8 divisors (see below), whose sum is σ = 106038130225608. Its totient is φ = 67325796968320.

The previous prime is 86261177365859. The next prime is 86261177365871. The reversal of 86261177365865 is 56856377116268.

It is an interprime number because it is at equal distance from previous prime (86261177365859) and next prime (86261177365871).

It can be written as a sum of positive squares in 4 ways, for example, as 17507523856 + 86243669842009 = 132316^2 + 9286747^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86261177365865 - 2⁶ = 86261177365801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210393115322 + ... + 210393115731.

It is an arithmetic number, because the mean of its divisors is an integer number (13254766278201).

Almost surely, 2^{86261177365865} is an apocalyptic number.

It is an amenable number.

86261177365865 is a deficient number, since it is larger than the sum of its proper divisors (19776952859743).

86261177365865 is a wasteful number, since it uses less digits than its factorization.

86261177365865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420786231099.

The product of its digits is 609638400, while the sum is 71.

The spelling of 86261177365865 in words is "eighty-six trillion, two hundred sixty-one billion, one hundred seventy-seven million, three hundred sixty-five thousand, eight hundred sixty-five".