66451161046201 has 16 divisors (see below), whose sum is σ = 69313455417024. Its totient is φ = 63650493797184.

The previous prime is 66451161046139. The next prime is 66451161046273. The reversal of 66451161046201 is 10264016115466.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66451161046201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66451161049201) 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, 37361086 + ... + 39099271.

It is an arithmetic number, because the mean of its divisors is an integer number (4332090963564).

Almost surely, 2^{66451161046201} is an apocalyptic number.

It is an amenable number.

66451161046201 is a deficient number, since it is larger than the sum of its proper divisors (2862294370823).

66451161046201 is a wasteful number, since it uses less digits than its factorization.

66451161046201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76460760.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 66451161046201 in words is "sixty-six trillion, four hundred fifty-one billion, one hundred sixty-one million, forty-six thousand, two hundred one".