662791938860 has 96 divisors (see below), whose sum is σ = 1486985955840. Its totient is φ = 247554058752.

The previous prime is 662791938857. The next prime is 662791938877. The reversal of 662791938860 is 68839197266.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39610976 + ... + 39627704.

It is an arithmetic number, because the mean of its divisors is an integer number (15489437040).

Almost surely, 2^662791938860 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 662791938860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (743492977920).

662791938860 is an abundant number, since it is smaller than the sum of its proper divisors (824194016980).

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

662791938860 is a wasteful number, since it uses less digits than its factorization.

662791938860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18807 (or 18805 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 65.

The spelling of 662791938860 in words is "six hundred sixty-two billion, seven hundred ninety-one million, nine hundred thirty-eight thousand, eight hundred sixty".