662391732144 has 80 divisors (see below), whose sum is σ = 1791394843392. Its totient is φ = 210509316864.

The previous prime is 662391732127. The next prime is 662391732151. The reversal of 662391732144 is 441237193266.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 662391732093 and 662391732102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638259 + ... + 1316114.

Almost surely, 2^662391732144 is an apocalyptic number.

It is an amenable number.

662391732144 is an abundant number, since it is smaller than the sum of its proper divisors (1129003111248).

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

662391732144 is a wasteful number, since it uses less digits than its factorization.

662391732144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954714 (or 1954708 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 48.

The spelling of 662391732144 in words is "six hundred sixty-two billion, three hundred ninety-one million, seven hundred thirty-two thousand, one hundred forty-four".