79147085519 has 2 divisors, whose sum is σ = 79147085520. Its totient is φ = 79147085518.

The previous prime is 79147085509. The next prime is 79147085533. The reversal of 79147085519 is 91558074197.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79147085519 - 2²⁴ = 79130308303 is a prime.

It is a super-2 number, since 2×79147085519² (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 (79147085509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39573542759 + 39573542760.

It is an arithmetic number, because the mean of its divisors is an integer number (39573542760).

Almost surely, 2^79147085519 is an apocalyptic number.

79147085519 is a deficient number, since it is larger than the sum of its proper divisors (1).

79147085519 is an equidigital number, since it uses as much as digits as its factorization.

79147085519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 56.

The spelling of 79147085519 in words is "seventy-nine billion, one hundred forty-seven million, eighty-five thousand, five hundred nineteen".