659745547956 has 72 divisors (see below), whose sum is σ = 1819388136384. Its totient is φ = 199913024640.

The previous prime is 659745547933. The next prime is 659745547957.

It is a happy number.

659745547956 is a `hidden beast` number, since 6 + 5 + 9 + 74 + 5 + 547 + 9 + 5 + 6 = 666.

659745547956 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659745547957) 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, 14287201 + ... + 14333303.

It is an arithmetic number, because the mean of its divisors is an integer number (25269279672).

Almost surely, 2^659745547956 is an apocalyptic number.

659745547956 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

659745547956 is an abundant number, since it is smaller than the sum of its proper divisors (1159642588428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

659745547956 is a wasteful number, since it uses less digits than its factorization.

659745547956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82261 (or 82256 counting only the distinct ones).

The product of its digits is 1428840000, while the sum is 72.

The spelling of 659745547956 in words is "six hundred fifty-nine billion, seven hundred forty-five million, five hundred forty-seven thousand, nine hundred fifty-six".