84215574772 has 48 divisors (see below), whose sum is σ = 170353911168. Its totient is φ = 35681443200.

The previous prime is 84215574701. The next prime is 84215574791. The reversal of 84215574772 is 27747551248.

It is a happy number.

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, 1892563 + ... + 1936549.

It is an arithmetic number, because the mean of its divisors is an integer number (3549039816).

Almost surely, 2^84215574772 is an apocalyptic number.

It is an amenable number.

84215574772 is an abundant number, since it is smaller than the sum of its proper divisors (86138336396).

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

84215574772 is a wasteful number, since it uses less digits than its factorization.

84215574772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44776 (or 44774 counting only the distinct ones).

The product of its digits is 4390400, while the sum is 52.

The spelling of 84215574772 in words is "eighty-four billion, two hundred fifteen million, five hundred seventy-four thousand, seven hundred seventy-two".