65623444432656 has 80 divisors (see below), whose sum is σ = 189937143893568. Its totient is φ = 19348435699200.

The previous prime is 65623444432621. The next prime is 65623444432687.

65623444432656 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 65623444432656.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1679532175 + ... + 1679571246.

Almost surely, 2^{65623444432656} is an apocalyptic number.

65623444432656 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

65623444432656 is an abundant number, since it is smaller than the sum of its proper divisors (124313699460912).

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

65623444432656 is a wasteful number, since it uses less digits than its factorization.

65623444432656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359103480 (or 3359103474 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 60.

The spelling of 65623444432656 in words is "sixty-five trillion, six hundred twenty-three billion, four hundred forty-four million, four hundred thirty-two thousand, six hundred fifty-six".