659949949956 has 24 divisors (see below), whose sum is σ = 1679872600224. Its totient is φ = 199984833280.

The previous prime is 659949949949. The next prime is 659949949999.

659949949956 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2499810285 + ... + 2499810548.

It is an arithmetic number, because the mean of its divisors is an integer number (69994691676).

Almost surely, 2^659949949956 is an apocalyptic number.

659949949956 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

659949949956 is an abundant number, since it is smaller than the sum of its proper divisors (1019922650268).

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

659949949956 is a wasteful number, since it uses less digits than its factorization.

659949949956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4999620851 (or 4999620849 counting only the distinct ones).

The product of its digits is 7652750400, while the sum is 84.

The spelling of 659949949956 in words is "six hundred fifty-nine billion, nine hundred forty-nine million, nine hundred forty-nine thousand, nine hundred fifty-six".