75663397944 has 96 divisors (see below), whose sum is σ = 212940000000. Its totient is φ = 25170266592.

The previous prime is 75663397939. The next prime is 75663397993. The reversal of 75663397944 is 44979336657.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 931057 + ... + 1009055.

It is an arithmetic number, because the mean of its divisors is an integer number (2218125000).

Almost surely, 2^75663397944 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 75663397944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106470000000).

75663397944 is an abundant number, since it is smaller than the sum of its proper divisors (137276602056).

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

75663397944 is a wasteful number, since it uses less digits than its factorization.

75663397944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78519 (or 78503 counting only the distinct ones).

The product of its digits is 102876480, while the sum is 63.

The spelling of 75663397944 in words is "seventy-five billion, six hundred sixty-three million, three hundred ninety-seven thousand, nine hundred forty-four".