79444720783 has 4 divisors (see below), whose sum is σ = 80450350240. Its totient is φ = 78439091328.

The previous prime is 79444720781. The next prime is 79444720867. The reversal of 79444720783 is 38702744497.

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

It is a cyclic number.

It is not a de Polignac number, because 79444720783 - 2¹ = 79444720781 is a prime.

It is a super-2 number, since 2×79444720783² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79444720781) 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, 502814610 + ... + 502814767.

It is an arithmetic number, because the mean of its divisors is an integer number (20112587560).

Almost surely, 2^79444720783 is an apocalyptic number.

79444720783 is a deficient number, since it is larger than the sum of its proper divisors (1005629457).

79444720783 is a wasteful number, since it uses less digits than its factorization.

79444720783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005629456.

The product of its (nonzero) digits is 9483264, while the sum is 55.

The spelling of 79444720783 in words is "seventy-nine billion, four hundred forty-four million, seven hundred twenty thousand, seven hundred eighty-three".