660979284480 has 1440 divisors, whose sum is σ = 2609455305600. Its totient is φ = 160024854528.

The previous prime is 660979284463. The next prime is 660979284517. The reversal of 660979284480 is 84482979066.

660979284480 is a `hidden beast` number, since 6 + 6 + 0 + 9 + 79 + 2 + 84 + 480 = 666.

660979284480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a super-2 number, since 2×660979284480² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11203038691 + ... + 11203038749.

It is an arithmetic number, because the mean of its divisors is an integer number (1812121740).

Almost surely, 2^660979284480 is an apocalyptic number.

660979284480 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 660979284480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304727652800).

660979284480 is an abundant number, since it is smaller than the sum of its proper divisors (1948476021120).

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

660979284480 is an frugal number, since it uses more digits than its factorization.

660979284480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 660979284480 in words is "six hundred sixty billion, nine hundred seventy-nine million, two hundred eighty-four thousand, four hundred eighty".