659397988480 has 256 divisors, whose sum is σ = 2050802012160. Its totient is φ = 196590366720.

The previous prime is 659397988471. The next prime is 659397988531. The reversal of 659397988480 is 84889793956.

It is a super-2 number, since 2×659397988480² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 659397988397 and 659397988406.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 842557 + ... + 1424323.

It is an arithmetic number, because the mean of its divisors is an integer number (8010945360).

Almost surely, 2^659397988480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659397988480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1025401006080).

659397988480 is an abundant number, since it is smaller than the sum of its proper divisors (1391404023680).

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

659397988480 is a wasteful number, since it uses less digits than its factorization.

659397988480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581827 (or 581815 counting only the distinct ones).

The product of its (nonzero) digits is 940584960, while the sum is 76.

The spelling of 659397988480 in words is "six hundred fifty-nine billion, three hundred ninety-seven million, nine hundred eighty-eight thousand, four hundred eighty".