679852237117541 has 4 divisors (see below), whose sum is σ = 683303263702092. Its totient is φ = 676401210532992.

The previous prime is 679852237117523. The next prime is 679852237117589. The reversal of 679852237117541 is 145711732258976.

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

It can be written as a sum of positive squares in 2 ways, for example, as 663629636220100 + 16222600897441 = 25761010^2 + 4027729^2 .

It is a cyclic number.

It is not a de Polignac number, because 679852237117541 - 2¹⁴ = 679852237101157 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 (679852237117441) 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, 1725513291980 + ... + 1725513292373.

It is an arithmetic number, because the mean of its divisors is an integer number (170825815925523).

Almost surely, 2^{679852237117541} is an apocalyptic number.

It is an amenable number.

679852237117541 is a deficient number, since it is larger than the sum of its proper divisors (3451026584551).

679852237117541 is a wasteful number, since it uses less digits than its factorization.

679852237117541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451026584550.

The product of its digits is 177811200, while the sum is 68.

The spelling of 679852237117541 in words is "six hundred seventy-nine trillion, eight hundred fifty-two billion, two hundred thirty-seven million, one hundred seventeen thousand, five hundred forty-one".