66810700733401 has 8 divisors (see below), whose sum is σ = 72752124211200. Its totient is φ = 61111784336400.

The previous prime is 66810700733393. The next prime is 66810700733423. The reversal of 66810700733401 is 10433700701866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66810700733401 - 2³ = 66810700733393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66810700733701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60626769625 + ... + 60626770726.

It is an arithmetic number, because the mean of its divisors is an integer number (9094015526400).

Almost surely, 2^{66810700733401} is an apocalyptic number.

It is an amenable number.

66810700733401 is a deficient number, since it is larger than the sum of its proper divisors (5941423477799).

66810700733401 is a wasteful number, since it uses less digits than its factorization.

66810700733401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121253540399.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 66810700733401 in words is "sixty-six trillion, eight hundred ten billion, seven hundred million, seven hundred thirty-three thousand, four hundred one".