79784216507 has 2 divisors, whose sum is σ = 79784216508. Its totient is φ = 79784216506.

The previous prime is 79784216441. The next prime is 79784216527. The reversal of 79784216507 is 70561248797.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79784216507 - 2⁸ = 79784216251 is a prime.

It is not a weakly prime, because it can be changed into another prime (79784216527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39892108253 + 39892108254.

It is an arithmetic number, because the mean of its divisors is an integer number (39892108254).

Almost surely, 2^79784216507 is an apocalyptic number.

79784216507 is a deficient number, since it is larger than the sum of its proper divisors (1).

79784216507 is an equidigital number, since it uses as much as digits as its factorization.

79784216507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5927040, while the sum is 56.

The spelling of 79784216507 in words is "seventy-nine billion, seven hundred eighty-four million, two hundred sixteen thousand, five hundred seven".