79784216522 has 4 divisors (see below), whose sum is σ = 119676324786. Its totient is φ = 39892108260.

The previous prime is 79784216507. The next prime is 79784216527. The reversal of 79784216522 is 22561248797.

It is a Cunningham number, because it is equal to 282461²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79784216521 + 1 = 282461^2 + 1^2 .

It is not an unprimeable number, because it can be changed into a prime (79784216527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19946054129 + ... + 19946054132.

Almost surely, 2^79784216522 is an apocalyptic number.

79784216522 is a deficient number, since it is larger than the sum of its proper divisors (39892108264).

79784216522 is a wasteful number, since it uses less digits than its factorization.

79784216522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39892108263.

The product of its digits is 3386880, while the sum is 53.

The spelling of 79784216522 in words is "seventy-nine billion, seven hundred eighty-four million, two hundred sixteen thousand, five hundred twenty-two".