84277791720 has 384 divisors, whose sum is σ = 294772608000. Its totient is φ = 20807761920.

The previous prime is 84277791683. The next prime is 84277791761. The reversal of 84277791720 is 2719777248.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 195539905 + ... + 195540335.

It is an arithmetic number, because the mean of its divisors is an integer number (767637000).

Almost surely, 2^84277791720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84277791720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147386304000).

84277791720 is an abundant number, since it is smaller than the sum of its proper divisors (210494816280).

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

84277791720 is a wasteful number, since it uses less digits than its factorization.

84277791720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 2765952, while the sum is 54.

The spelling of 84277791720 in words is "eighty-four billion, two hundred seventy-seven million, seven hundred ninety-one thousand, seven hundred twenty".