79618029519709 has 2 divisors, whose sum is σ = 79618029519710. Its totient is φ = 79618029519708.

The previous prime is 79618029519647. The next prime is 79618029519739. The reversal of 79618029519709 is 90791592081697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72450790310809 + 7167239208900 = 8511803^2 + 2677170^2 .

It is a cyclic number.

It is not a de Polignac number, because 79618029519709 - 2³⁹ = 79068273705821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79618029519739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39809014759854 + 39809014759855.

It is an arithmetic number, because the mean of its divisors is an integer number (39809014759855).

Almost surely, 2^{79618029519709} is an apocalyptic number.

It is an amenable number.

79618029519709 is a deficient number, since it is larger than the sum of its proper divisors (1).

79618029519709 is an equidigital number, since it uses as much as digits as its factorization.

79618029519709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 154314720, while the sum is 73.

The spelling of 79618029519709 in words is "seventy-nine trillion, six hundred eighteen billion, twenty-nine million, five hundred nineteen thousand, seven hundred nine".