663371533676 has 24 divisors (see below), whose sum is σ = 1161617026080. Its totient is φ = 331481030400.

The previous prime is 663371533663. The next prime is 663371533679. The reversal of 663371533676 is 676335173366.

It is not an unprimeable number, because it can be changed into a prime (663371533679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60804110 + ... + 60815018.

It is an arithmetic number, because the mean of its divisors is an integer number (48400709420).

Almost surely, 2^663371533676 is an apocalyptic number.

It is an amenable number.

663371533676 is a deficient number, since it is larger than the sum of its proper divisors (498245492404).

663371533676 is a wasteful number, since it uses less digits than its factorization.

663371533676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18905 (or 18903 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 56.

The spelling of 663371533676 in words is "six hundred sixty-three billion, three hundred seventy-one million, five hundred thirty-three thousand, six hundred seventy-six".