66186454763 has 12 divisors (see below), whose sum is σ = 78184754568. Its totient is φ = 55541079360.

The previous prime is 66186454753. The next prime is 66186454771. The reversal of 66186454763 is 36745468166.

It is not a de Polignac number, because 66186454763 - 2¹⁸ = 66186192619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66186454699 and 66186454708.

It is not an unprimeable number, because it can be changed into a prime (66186454753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17799770 + ... + 17803487.

It is an arithmetic number, because the mean of its divisors is an integer number (6515396214).

Almost surely, 2^66186454763 is an apocalyptic number.

66186454763 is a deficient number, since it is larger than the sum of its proper divisors (11998299805).

66186454763 is a wasteful number, since it uses less digits than its factorization.

66186454763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35603294 (or 35603281 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 56.

The spelling of 66186454763 in words is "sixty-six billion, one hundred eighty-six million, four hundred fifty-four thousand, seven hundred sixty-three".