83861641086 has 16 divisors (see below), whose sum is σ = 169262029200. Its totient is φ = 27697422528.

The previous prime is 83861641067. The next prime is 83861641093. The reversal of 83861641086 is 68014616838.

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, 64113751 + ... + 64115058.

It is an arithmetic number, because the mean of its divisors is an integer number (10578876825).

Almost surely, 2^83861641086 is an apocalyptic number.

83861641086 is an abundant number, since it is smaller than the sum of its proper divisors (85400388114).

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

83861641086 is a wasteful number, since it uses less digits than its factorization.

83861641086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128228923.

The product of its (nonzero) digits is 1327104, while the sum is 51.

The spelling of 83861641086 in words is "eighty-three billion, eight hundred sixty-one million, six hundred forty-one thousand, eighty-six".