679193485993 has 4 divisors (see below), whose sum is σ = 740938348368. Its totient is φ = 617448623620.

The previous prime is 679193485973. The next prime is 679193486053. The reversal of 679193485993 is 399584391976.

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 not a de Polignac number, because 679193485993 - 2⁵ = 679193485961 is a prime.

It is a super-2 number, since 2×679193485993² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679193485913) 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 3 ways as a sum of consecutive naturals, for example, 30872431171 + ... + 30872431192.

It is an arithmetic number, because the mean of its divisors is an integer number (185234587092).

Almost surely, 2^679193485993 is an apocalyptic number.

It is an amenable number.

679193485993 is a deficient number, since it is larger than the sum of its proper divisors (61744862375).

679193485993 is a wasteful number, since it uses less digits than its factorization.

679193485993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61744862374.

The product of its digits is 396809280, while the sum is 73.

The spelling of 679193485993 in words is "six hundred seventy-nine billion, one hundred ninety-three million, four hundred eighty-five thousand, nine hundred ninety-three".