66361042007 has 8 divisors (see below), whose sum is σ = 71581199760. Its totient is φ = 61157378880.

The previous prime is 66361041977. The next prime is 66361042009. The reversal of 66361042007 is 70024016366.

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

It is not a de Polignac number, because 66361042007 - 2²⁰ = 66359993431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66361042009) 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, 4115294 + ... + 4131387.

It is an arithmetic number, because the mean of its divisors is an integer number (8947649970).

Almost surely, 2^66361042007 is an apocalyptic number.

66361042007 is a deficient number, since it is larger than the sum of its proper divisors (5220157753).

66361042007 is a wasteful number, since it uses less digits than its factorization.

66361042007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8247313.

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 66361042007 in words is "sixty-six billion, three hundred sixty-one million, forty-two thousand, seven".