30799918079 has 24 divisors (see below), whose sum is σ = 39018098688. Its totient is φ = 23766652800.

The previous prime is 30799918063. The next prime is 30799918091. The reversal of 30799918079 is 97081999703.

It is a happy number.

It is not a de Polignac number, because 30799918079 - 2⁴ = 30799918063 is a prime.

It is a super-2 number, since 2×30799918079² (a number of 22 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 (30799918579) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 284447 + ... + 377504.

It is an arithmetic number, because the mean of its divisors is an integer number (1625754112).

Almost surely, 2^30799918079 is an apocalyptic number.

30799918079 is a deficient number, since it is larger than the sum of its proper divisors (8218180609).

30799918079 is a wasteful number, since it uses less digits than its factorization.

30799918079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662015 (or 661998 counting only the distinct ones).

The product of its (nonzero) digits is 7715736, while the sum is 62.

The spelling of 30799918079 in words is "thirty billion, seven hundred ninety-nine million, nine hundred eighteen thousand, seventy-nine".