66313766763 has 12 divisors (see below), whose sum is σ = 95881122480. Its totient is φ = 44165529936.

The previous prime is 66313766723. The next prime is 66313766803. The reversal of 66313766763 is 36766731366.

It is an interprime number because it is at equal distance from previous prime (66313766723) and next prime (66313766803).

It is not a de Polignac number, because 66313766763 - 2¹² = 66313762667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66313766723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3627703 + ... + 3645936.

It is an arithmetic number, because the mean of its divisors is an integer number (7990093540).

Almost surely, 2^66313766763 is an apocalyptic number.

66313766763 is a deficient number, since it is larger than the sum of its proper divisors (29567355717).

66313766763 is a wasteful number, since it uses less digits than its factorization.

66313766763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7274658 (or 7274655 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 54.

The spelling of 66313766763 in words is "sixty-six billion, three hundred thirteen million, seven hundred sixty-six thousand, seven hundred sixty-three".