79446729613 has 2 divisors, whose sum is σ = 79446729614. Its totient is φ = 79446729612.

The previous prime is 79446729577. The next prime is 79446729619. The reversal of 79446729613 is 31692764497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46271021449 + 33175708164 = 215107^2 + 182142^2 .

It is an emirp because it is prime and its reverse (31692764497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79446729613 - 2¹³ = 79446721421 is a prime.

It is a super-2 number, since 2×79446729613² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79446729619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39723364806 + 39723364807.

It is an arithmetic number, because the mean of its divisors is an integer number (39723364807).

Almost surely, 2^79446729613 is an apocalyptic number.

It is an amenable number.

79446729613 is a deficient number, since it is larger than the sum of its proper divisors (1).

79446729613 is an equidigital number, since it uses as much as digits as its factorization.

79446729613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 58.

The spelling of 79446729613 in words is "seventy-nine billion, four hundred forty-six million, seven hundred twenty-nine thousand, six hundred thirteen".