659181979413 has 24 divisors (see below), whose sum is σ = 954909048600. Its totient is φ = 438182790144.

The previous prime is 659181979411. The next prime is 659181979427. The reversal of 659181979413 is 314979181956.

659181979413 is a `hidden beast` number, since 6 + 59 + 1 + 81 + 97 + 9 + 413 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 114475985649 + 544705993764 = 338343^2 + 738042^2 .

It is not a de Polignac number, because 659181979413 - 2¹ = 659181979411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659181979411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11373853 + ... + 11431661.

It is an arithmetic number, because the mean of its divisors is an integer number (39787877025).

Almost surely, 2^659181979413 is an apocalyptic number.

It is an amenable number.

659181979413 is a deficient number, since it is larger than the sum of its proper divisors (295727069187).

659181979413 is a wasteful number, since it uses less digits than its factorization.

659181979413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61461 (or 61458 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 63.

The spelling of 659181979413 in words is "six hundred fifty-nine billion, one hundred eighty-one million, nine hundred seventy-nine thousand, four hundred thirteen".