83508287868 has 18 divisors (see below), whose sum is σ = 211090394424. Its totient is φ = 27836095944.

The previous prime is 83508287851. The next prime is 83508287873. The reversal of 83508287868 is 86878280538.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1159837296 + ... + 1159837367.

Almost surely, 2^83508287868 is an apocalyptic number.

It is an amenable number.

83508287868 is an abundant number, since it is smaller than the sum of its proper divisors (127582106556).

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

83508287868 is a wasteful number, since it uses less digits than its factorization.

83508287868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319674673 (or 2319674668 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 63.

The spelling of 83508287868 in words is "eighty-three billion, five hundred eight million, two hundred eighty-seven thousand, eight hundred sixty-eight".