65988733788956 has 48 divisors (see below), whose sum is σ = 126363540357600. Its totient is φ = 29903233536000.

The previous prime is 65988733788949. The next prime is 65988733788961.

It is a happy number.

65988733788956 is nontrivially palindromic in base 10.

It is a congruent number.

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, 80688176 + ... + 81501896.

It is an arithmetic number, because the mean of its divisors is an integer number (2632573757450).

Almost surely, 2^{65988733788956} is an apocalyptic number.

It is an amenable number.

65988733788956 is a deficient number, since it is larger than the sum of its proper divisors (60374806568644).

65988733788956 is a wasteful number, since it uses less digits than its factorization.

65988733788956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819366 (or 819364 counting only the distinct ones).

The product of its digits is 131681894400, while the sum is 92.

The spelling of 65988733788956 in words is "sixty-five trillion, nine hundred eighty-eight billion, seven hundred thirty-three million, seven hundred eighty-eight thousand, nine hundred fifty-six".