79629502993 has 2 divisors, whose sum is σ = 79629502994. Its totient is φ = 79629502992.

The previous prime is 79629502943. The next prime is 79629503003. The reversal of 79629502993 is 39920592697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68986073104 + 10643429889 = 262652^2 + 103167^2 .

It is an emirp because it is prime and its reverse (39920592697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79629502993 - 2⁹ = 79629502481 is a prime.

It is not a weakly prime, because it can be changed into another prime (79629502913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39814751496 + 39814751497.

It is an arithmetic number, because the mean of its divisors is an integer number (39814751497).

Almost surely, 2^79629502993 is an apocalyptic number.

It is an amenable number.

79629502993 is a deficient number, since it is larger than the sum of its proper divisors (1).

79629502993 is an equidigital number, since it uses as much as digits as its factorization.

79629502993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16533720, while the sum is 61.

The spelling of 79629502993 in words is "seventy-nine billion, six hundred twenty-nine million, five hundred two thousand, nine hundred ninety-three".