84373280779 has 4 divisors (see below), whose sum is σ = 84709429560. Its totient is φ = 84037132000.

The previous prime is 84373280711. The next prime is 84373280809. The reversal of 84373280779 is 97708237348.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84373280779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84373280279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168074014 + ... + 168074515.

It is an arithmetic number, because the mean of its divisors is an integer number (21177357390).

Almost surely, 2^84373280779 is an apocalyptic number.

84373280779 is a deficient number, since it is larger than the sum of its proper divisors (336148781).

84373280779 is a wasteful number, since it uses less digits than its factorization.

84373280779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336148780.

The product of its (nonzero) digits is 14224896, while the sum is 58.

The spelling of 84373280779 in words is "eighty-four billion, three hundred seventy-three million, two hundred eighty thousand, seven hundred seventy-nine".