84793945636 has 81 divisors (see below), whose sum is σ = 160270023249. Its totient is φ = 39248292096.

The previous prime is 84793945631. The next prime is 84793945637. The reversal of 84793945636 is 63654939748.

The square root of 84793945636 is 291194.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 38075716900 + 46718228736 = 195130^2 + 216144^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84793945631) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 874164340 + ... + 874164436.

Almost surely, 2^84793945636 is an apocalyptic number.

84793945636 is the 291194-th square number.

It is an amenable number.

84793945636 is a deficient number, since it is larger than the sum of its proper divisors (75476077613).

84793945636 is an equidigital number, since it uses as much as digits as its factorization.

84793945636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 197 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 64.

Multiplying 84793945636 by its sum of digits (64), we get a square (5426812520704 = 2329552²).

The spelling of 84793945636 in words is "eighty-four billion, seven hundred ninety-three million, nine hundred forty-five thousand, six hundred thirty-six".