66810014370801 has 48 divisors (see below), whose sum is σ = 104928178118400. Its totient is φ = 40719054170880.

The previous prime is 66810014370793. The next prime is 66810014370833. The reversal of 66810014370801 is 10807341001866.

66810014370801 is a `hidden beast` number, since 66 + 81 + 0 + 0 + 1 + 437 + 0 + 80 + 1 = 666.

It is not a de Polignac number, because 66810014370801 - 2³ = 66810014370793 is a prime.

It is a super-2 number, since 2×66810014370801² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66810014371801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2073150 + ... + 11743848.

It is an arithmetic number, because the mean of its divisors is an integer number (2186003710800).

Almost surely, 2^{66810014370801} is an apocalyptic number.

It is an amenable number.

66810014370801 is a deficient number, since it is larger than the sum of its proper divisors (38118163747599).

66810014370801 is a wasteful number, since it uses less digits than its factorization.

66810014370801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9671286 (or 9671283 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 66810014370801 in words is "sixty-six trillion, eight hundred ten billion, fourteen million, three hundred seventy thousand, eight hundred one".