84165905140 has 48 divisors (see below), whose sum is σ = 184464822528. Its totient is φ = 32197071104.

The previous prime is 84165905119. The next prime is 84165905171. The reversal of 84165905140 is 4150956148.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3531504 + ... + 3555256.

It is an arithmetic number, because the mean of its divisors is an integer number (3843017136).

Almost surely, 2^84165905140 is an apocalyptic number.

It is an amenable number.

84165905140 is an abundant number, since it is smaller than the sum of its proper divisors (100298917388).

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

84165905140 is a wasteful number, since it uses less digits than its factorization.

84165905140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31488 (or 31486 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 84165905140 in words is "eighty-four billion, one hundred sixty-five million, nine hundred five thousand, one hundred forty".