66126451807 has 8 divisors (see below), whose sum is σ = 71843307984. Its totient is φ = 60499625088.

The previous prime is 66126451799. The next prime is 66126451813. The reversal of 66126451807 is 70815462166.

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 66126451807 - 2³ = 66126451799 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 (66126451877) 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, 22505833 + ... + 22508770.

It is an arithmetic number, because the mean of its divisors is an integer number (8980413498).

Almost surely, 2^66126451807 is an apocalyptic number.

66126451807 is a deficient number, since it is larger than the sum of its proper divisors (5716856177).

66126451807 is a wasteful number, since it uses less digits than its factorization.

66126451807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45014729.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 66126451807 in words is "sixty-six billion, one hundred twenty-six million, four hundred fifty-one thousand, eight hundred seven".