79530858893 has 4 divisors (see below), whose sum is σ = 79585370880. Its totient is φ = 79476346908.

The previous prime is 79530858871. The next prime is 79530858899. The reversal of 79530858893 is 39885803597.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79530858893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79530858899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27253805 + ... + 27256722.

It is an arithmetic number, because the mean of its divisors is an integer number (19896342720).

Almost surely, 2^79530858893 is an apocalyptic number.

It is an amenable number.

79530858893 is a deficient number, since it is larger than the sum of its proper divisors (54511987).

79530858893 is a wasteful number, since it uses less digits than its factorization.

79530858893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54511986.

The product of its (nonzero) digits is 65318400, while the sum is 65.

The spelling of 79530858893 in words is "seventy-nine billion, five hundred thirty million, eight hundred fifty-eight thousand, eight hundred ninety-three".