79725384819 has 6 divisors (see below), whose sum is σ = 115158889196. Its totient is φ = 53150256540.

The previous prime is 79725384803. The next prime is 79725384881. The reversal of 79725384819 is 91848352797.

79725384819 is a `hidden beast` number, since 7 + 97 + 2 + 538 + 4 + 8 + 1 + 9 = 666.

It is not a de Polignac number, because 79725384819 - 2⁴ = 79725384803 is a prime.

It is a super-2 number, since 2×79725384819² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79725384119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4429188037 + ... + 4429188054.

Almost surely, 2^79725384819 is an apocalyptic number.

79725384819 is a deficient number, since it is larger than the sum of its proper divisors (35433504377).

79725384819 is a wasteful number, since it uses less digits than its factorization.

79725384819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8858376097 (or 8858376094 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The spelling of 79725384819 in words is "seventy-nine billion, seven hundred twenty-five million, three hundred eighty-four thousand, eight hundred nineteen".