66124081267 has 8 divisors (see below), whose sum is σ = 66373398000. Its totient is φ = 65875079424.

The previous prime is 66124081217. The next prime is 66124081307. The reversal of 66124081267 is 76218042166.

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 66124081267 - 2⁷ = 66124081139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66124081207) 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, 346359 + ... + 502207.

It is an arithmetic number, because the mean of its divisors is an integer number (8296674750).

Almost surely, 2^66124081267 is an apocalyptic number.

66124081267 is a deficient number, since it is larger than the sum of its proper divisors (249316733).

66124081267 is a wasteful number, since it uses less digits than its factorization.

66124081267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157445.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 66124081267 in words is "sixty-six billion, one hundred twenty-four million, eighty-one thousand, two hundred sixty-seven".