679521341942 has 4 divisors (see below), whose sum is σ = 1019282012916. Its totient is φ = 339760670970.

The previous prime is 679521341921. The next prime is 679521341957. The reversal of 679521341942 is 249143125976.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169880335484 + ... + 169880335487.

It is an arithmetic number, because the mean of its divisors is an integer number (254820503229).

Almost surely, 2^679521341942 is an apocalyptic number.

679521341942 is a deficient number, since it is larger than the sum of its proper divisors (339760670974).

679521341942 is a wasteful number, since it uses less digits than its factorization.

679521341942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339760670973.

The product of its digits is 3265920, while the sum is 53.

The spelling of 679521341942 in words is "six hundred seventy-nine billion, five hundred twenty-one million, three hundred forty-one thousand, nine hundred forty-two".