663881765514 has 16 divisors (see below), whose sum is σ = 1448469306720. Its totient is φ = 201176292560.

The previous prime is 663881765483. The next prime is 663881765543. The reversal of 663881765514 is 415567188366.

It is a happy number.

663881765514 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5029407249 + ... + 5029407380.

It is an arithmetic number, because the mean of its divisors is an integer number (90529331670).

Almost surely, 2^663881765514 is an apocalyptic number.

663881765514 is an abundant number, since it is smaller than the sum of its proper divisors (784587541206).

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

663881765514 is a wasteful number, since it uses less digits than its factorization.

663881765514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10058814645.

The product of its digits is 29030400, while the sum is 60.

The spelling of 663881765514 in words is "six hundred sixty-three billion, eight hundred eighty-one million, seven hundred sixty-five thousand, five hundred fourteen".