84290579780 has 48 divisors (see below), whose sum is σ = 193952840256. Its totient is φ = 30516074880.

The previous prime is 84290579773. The next prime is 84290579809. The reversal of 84290579780 is 8797509248.

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, 793979 + ... + 893858.

It is an arithmetic number, because the mean of its divisors is an integer number (4040684172).

Almost surely, 2^84290579780 is an apocalyptic number.

It is an amenable number.

84290579780 is an abundant number, since it is smaller than the sum of its proper divisors (109662260476).

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

84290579780 is a wasteful number, since it uses less digits than its factorization.

84290579780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688084 (or 1688082 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 84290579780 in words is "eighty-four billion, two hundred ninety million, five hundred seventy-nine thousand, seven hundred eighty".