66736288756 has 12 divisors (see below), whose sum is σ = 121866266592. Its totient is φ = 31917355448.

The previous prime is 66736288747. The next prime is 66736288763. The reversal of 66736288756 is 65788263766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362697130 + ... + 362697313.

It is an arithmetic number, because the mean of its divisors is an integer number (10155522216).

Almost surely, 2^66736288756 is an apocalyptic number.

It is an amenable number.

66736288756 is a deficient number, since it is larger than the sum of its proper divisors (55129977836).

66736288756 is a wasteful number, since it uses less digits than its factorization.

66736288756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725394470 (or 725394468 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 64.

The spelling of 66736288756 in words is "sixty-six billion, seven hundred thirty-six million, two hundred eighty-eight thousand, seven hundred fifty-six".