79741573619 has 2 divisors, whose sum is σ = 79741573620. Its totient is φ = 79741573618.

The previous prime is 79741573601. The next prime is 79741573721. The reversal of 79741573619 is 91637514797.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (91637514797) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79741573619 is a prime.

It is a super-2 number, since 2×79741573619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79741573319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39870786809 + 39870786810.

It is an arithmetic number, because the mean of its divisors is an integer number (39870786810).

Almost surely, 2^79741573619 is an apocalyptic number.

79741573619 is a deficient number, since it is larger than the sum of its proper divisors (1).

79741573619 is an equidigital number, since it uses as much as digits as its factorization.

79741573619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10001880, while the sum is 59.

The spelling of 79741573619 in words is "seventy-nine billion, seven hundred forty-one million, five hundred seventy-three thousand, six hundred nineteen".