78379923349 has 8 divisors (see below), whose sum is σ = 96467598080. Its totient is φ = 62014884336.

The previous prime is 78379923317. The next prime is 78379923367. The reversal of 78379923349 is 94332997387.

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 78379923349 - 2⁵ = 78379923317 is a prime.

It is a super-2 number, since 2×78379923349² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78379923949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430658829 + ... + 430659010.

It is an arithmetic number, because the mean of its divisors is an integer number (12058449760).

Almost surely, 2^78379923349 is an apocalyptic number.

It is an amenable number.

78379923349 is a deficient number, since it is larger than the sum of its proper divisors (18087674731).

78379923349 is a wasteful number, since it uses less digits than its factorization.

78379923349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861317859.

The product of its digits is 61725888, while the sum is 64.

The spelling of 78379923349 in words is "seventy-eight billion, three hundred seventy-nine million, nine hundred twenty-three thousand, three hundred forty-nine".