660117751356 has 144 divisors (see below), whose sum is σ = 1811168825760. Its totient is φ = 186567413760.

The previous prime is 660117751327. The next prime is 660117751367. The reversal of 660117751356 is 653157711066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34607790 + ... + 34626858.

It is an arithmetic number, because the mean of its divisors is an integer number (12577561290).

Almost surely, 2^660117751356 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 660117751356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905584412880).

660117751356 is an abundant number, since it is smaller than the sum of its proper divisors (1151051074404).

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

660117751356 is a wasteful number, since it uses less digits than its factorization.

660117751356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19724 (or 19715 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 48.

The spelling of 660117751356 in words is "six hundred sixty billion, one hundred seventeen million, seven hundred fifty-one thousand, three hundred fifty-six".