79307310247 has 4 divisors (see below), whose sum is σ = 86517065736. Its totient is φ = 72097554760.

The previous prime is 79307310233. The next prime is 79307310287. The reversal of 79307310247 is 74201370397.

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

It is a de Polignac number, because none of the positive numbers 2^k-79307310247 is a prime.

It is a super-2 number, since 2×79307310247² (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 (79307310287) 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, 3604877728 + ... + 3604877749.

It is an arithmetic number, because the mean of its divisors is an integer number (21629266434).

Almost surely, 2^79307310247 is an apocalyptic number.

79307310247 is a deficient number, since it is larger than the sum of its proper divisors (7209755489).

79307310247 is a wasteful number, since it uses less digits than its factorization.

79307310247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7209755488.

The product of its (nonzero) digits is 222264, while the sum is 43.

The spelling of 79307310247 in words is "seventy-nine billion, three hundred seven million, three hundred ten thousand, two hundred forty-seven".