86660651278 has 16 divisors (see below), whose sum is σ = 130776145920. Its totient is φ = 43069205016.

The previous prime is 86660651237. The next prime is 86660651321. The reversal of 86660651278 is 87215606668.

It is a congruent 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, 138403 + ... + 438721.

It is an arithmetic number, because the mean of its divisors is an integer number (8173509120).

Almost surely, 2^86660651278 is an apocalyptic number.

86660651278 is a deficient number, since it is larger than the sum of its proper divisors (44115494642).

86660651278 is a wasteful number, since it uses less digits than its factorization.

86660651278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301191.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 86660651278 in words is "eighty-six billion, six hundred sixty million, six hundred fifty-one thousand, two hundred seventy-eight".