80785384634 has 4 divisors (see below), whose sum is σ = 121178076954. Its totient is φ = 40392692316.

The previous prime is 80785384579. The next prime is 80785384643. The reversal of 80785384634 is 43648358708.

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., 62058283225 + 18727101409 = 249115^2 + 136847^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80785384634.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20196346157 + ... + 20196346160.

Almost surely, 2^80785384634 is an apocalyptic number.

80785384634 is a deficient number, since it is larger than the sum of its proper divisors (40392692320).

80785384634 is a wasteful number, since it uses less digits than its factorization.

80785384634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40392692319.

The product of its (nonzero) digits is 15482880, while the sum is 56.

The spelling of 80785384634 in words is "eighty billion, seven hundred eighty-five million, three hundred eighty-four thousand, six hundred thirty-four".