662991387759 has 6 divisors (see below), whose sum is σ = 957654226776. Its totient is φ = 441994258500.

The previous prime is 662991387727. The next prime is 662991387761. The reversal of 662991387759 is 957783199266.

It is not a de Polignac number, because 662991387759 - 2⁵ = 662991387727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662991380759) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36832854867 + ... + 36832854884.

It is an arithmetic number, because the mean of its divisors is an integer number (159609037796).

Almost surely, 2^662991387759 is an apocalyptic number.

662991387759 is a deficient number, since it is larger than the sum of its proper divisors (294662839017).

662991387759 is a wasteful number, since it uses less digits than its factorization.

662991387759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73665709757 (or 73665709754 counting only the distinct ones).

The product of its digits is 308629440, while the sum is 72.

The spelling of 662991387759 in words is "six hundred sixty-two billion, nine hundred ninety-one million, three hundred eighty-seven thousand, seven hundred fifty-nine".