84140855490 has 64 divisors (see below), whose sum is σ = 209155219200. Its totient is φ = 21637534464.

The previous prime is 84140855471. The next prime is 84140855503. The reversal of 84140855490 is 9455804148.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 662899 + ... + 779561.

It is an arithmetic number, because the mean of its divisors is an integer number (3268050300).

Almost surely, 2^84140855490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84140855490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104577609600).

84140855490 is an abundant number, since it is smaller than the sum of its proper divisors (125014363710).

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

84140855490 is a wasteful number, since it uses less digits than its factorization.

84140855490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117531.

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 84140855490 in words is "eighty-four billion, one hundred forty million, eight hundred fifty-five thousand, four hundred ninety".