659320456320 has 320 divisors, whose sum is σ = 2359438899840. Its totient is φ = 175453931520.

The previous prime is 659320456313. The next prime is 659320456339. The reversal of 659320456320 is 23654023956.

659320456320 is a `hidden beast` number, since 6 + 5 + 9 + 3 + 2 + 0 + 4 + 5 + 632 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 25440489 + ... + 25466391.

It is an arithmetic number, because the mean of its divisors is an integer number (7373246562).

Almost surely, 2^659320456320 is an apocalyptic number.

659320456320 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 659320456320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1179719449920).

659320456320 is an abundant number, since it is smaller than the sum of its proper divisors (1700118443520).

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

659320456320 is a wasteful number, since it uses less digits than its factorization.

659320456320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26425 (or 26404 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 659320456320 in words is "six hundred fifty-nine billion, three hundred twenty million, four hundred fifty-six thousand, three hundred twenty".