86918647922 has 6 divisors (see below), whose sum is σ = 130378597293. Its totient is φ = 43459115492.

The previous prime is 86918647919. The next prime is 86918647961. The reversal of 86918647922 is 22974681968.

It can be written as a sum of positive squares in 2 ways, for example, as 57677305921 + 29241342001 = 240161^2 + 171001^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=208469.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 312704 + ... + 521172.

Almost surely, 2^86918647922 is an apocalyptic number.

86918647922 is a deficient number, since it is larger than the sum of its proper divisors (43459949371).

86918647922 is an frugal number, since it uses more digits than its factorization.

86918647922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416940 (or 208471 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 62.

The spelling of 86918647922 in words is "eighty-six billion, nine hundred eighteen million, six hundred forty-seven thousand, nine hundred twenty-two".