679454329581 has 12 divisors (see below), whose sum is σ = 981704968608. Its totient is φ = 452844505224.

The previous prime is 679454329517. The next prime is 679454329627. The reversal of 679454329581 is 185923454976.

679454329581 is a `hidden beast` number, since 6 + 7 + 9 + 4 + 5 + 43 + 2 + 9 + 581 = 666.

679454329581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 679454329581 - 2⁶ = 679454329517 is a prime.

It is a super-2 number, since 2×679454329581² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679454329381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10386235 + ... + 10451448.

It is an arithmetic number, because the mean of its divisors is an integer number (81808747384).

Almost surely, 2^679454329581 is an apocalyptic number.

It is an amenable number.

679454329581 is a deficient number, since it is larger than the sum of its proper divisors (302250639027).

679454329581 is a wasteful number, since it uses less digits than its factorization.

679454329581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20841312 (or 20841309 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 63.

The spelling of 679454329581 in words is "six hundred seventy-nine billion, four hundred fifty-four million, three hundred twenty-nine thousand, five hundred eighty-one".