79669263929 has 2 divisors, whose sum is σ = 79669263930. Its totient is φ = 79669263928.

The previous prime is 79669263923. The next prime is 79669263959. The reversal of 79669263929 is 92936296697.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66963465529 + 12705798400 = 258773^2 + 112720^2 .

It is a cyclic number.

It is not a de Polignac number, because 79669263929 - 2²⁴ = 79652486713 is a prime.

It is a super-2 number, since 2×79669263929² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79669263923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39834631964 + 39834631965.

It is an arithmetic number, because the mean of its divisors is an integer number (39834631965).

Almost surely, 2^79669263929 is an apocalyptic number.

It is an amenable number.

79669263929 is a deficient number, since it is larger than the sum of its proper divisors (1).

79669263929 is an equidigital number, since it uses as much as digits as its factorization.

79669263929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119042784, while the sum is 68.

The spelling of 79669263929 in words is "seventy-nine billion, six hundred sixty-nine million, two hundred sixty-three thousand, nine hundred twenty-nine".