659900545920 has 2880 divisors, whose sum is σ = 3199912808400. Its totient is φ = 128755630080.

The previous prime is 659900545861. The next prime is 659900545933. The reversal of 659900545920 is 29545009956.

659900545920 is a `hidden beast` number, since 6 + 5 + 9 + 9 + 0 + 0 + 545 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2880).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 5839827784 + ... + 5839827896.

Almost surely, 2^659900545920 is an apocalyptic number.

659900545920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659900545920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599956404200).

659900545920 is an abundant number, since it is smaller than the sum of its proper divisors (2540012262480).

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

659900545920 is a wasteful number, since it uses less digits than its factorization.

659900545920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 4374000, while the sum is 54.

The spelling of 659900545920 in words is "six hundred fifty-nine billion, nine hundred million, five hundred forty-five thousand, nine hundred twenty".