66748394610423 has 16 divisors (see below), whose sum is σ = 99171486082560. Its totient is φ = 44370690743448.

The previous prime is 66748394610419. The next prime is 66748394610467. The reversal of 66748394610423 is 32401649384766.

66748394610423 is a `hidden beast` number, since 6 + 6 + 7 + 4 + 8 + 3 + 9 + 4 + 610 + 4 + 2 + 3 = 666.

It is not a de Polignac number, because 66748394610423 - 2² = 66748394610419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66748394610323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3562184815 + ... + 3562203552.

It is an arithmetic number, because the mean of its divisors is an integer number (6198217880160).

Almost surely, 2^{66748394610423} is an apocalyptic number.

66748394610423 is a deficient number, since it is larger than the sum of its proper divisors (32423091472137).

66748394610423 is a wasteful number, since it uses less digits than its factorization.

66748394610423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7124388723 (or 7124388717 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 63.

The spelling of 66748394610423 in words is "sixty-six trillion, seven hundred forty-eight billion, three hundred ninety-four million, six hundred ten thousand, four hundred twenty-three".