79747650919 has 8 divisors (see below), whose sum is σ = 81880766352. Its totient is φ = 77627195520.

The previous prime is 79747650859. The next prime is 79747650973. The reversal of 79747650919 is 91905674797.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79747650919 - 2⁷ = 79747650791 is a prime.

It is a super-2 number, since 2×79747650919² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79747650019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3152242 + ... + 3177439.

It is an arithmetic number, because the mean of its divisors is an integer number (10235095794).

Almost surely, 2^79747650919 is an apocalyptic number.

79747650919 is a deficient number, since it is larger than the sum of its proper divisors (2133115433).

79747650919 is a wasteful number, since it uses less digits than its factorization.

79747650919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6330017.

The product of its (nonzero) digits is 30005640, while the sum is 64.

The spelling of 79747650919 in words is "seventy-nine billion, seven hundred forty-seven million, six hundred fifty thousand, nine hundred nineteen".