659969969956 has 24 divisors (see below), whose sum is σ = 1271092614624. Its totient is φ = 297331601280.

The previous prime is 659969969951. The next prime is 659969969957.

It is a happy number.

659969969956 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×659969969956² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (659969969951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66363690 + ... + 66373633.

It is an arithmetic number, because the mean of its divisors is an integer number (52962192276).

Almost surely, 2^659969969956 is an apocalyptic number.

It is an amenable number.

659969969956 is a deficient number, since it is larger than the sum of its proper divisors (611122644668).

659969969956 is a wasteful number, since it uses less digits than its factorization.

659969969956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132737451 (or 132737449 counting only the distinct ones).

The product of its digits is 17218688400, while the sum is 88.

The spelling of 659969969956 in words is "six hundred fifty-nine billion, nine hundred sixty-nine million, nine hundred sixty-nine thousand, nine hundred fifty-six".