66407125127 has 8 divisors (see below), whose sum is σ = 75897026592. Its totient is φ = 56918016000.

The previous prime is 66407125111. The next prime is 66407125129. The reversal of 66407125127 is 72152170466.

66407125127 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66407125127 - 2⁴ = 66407125111 is a prime.

It is a super-2 number, since 2×66407125127² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66407125129) 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, 6074 + ... + 364487.

It is an arithmetic number, because the mean of its divisors is an integer number (9487128324).

Almost surely, 2^66407125127 is an apocalyptic number.

66407125127 is a deficient number, since it is larger than the sum of its proper divisors (9489901465).

66407125127 is a wasteful number, since it uses less digits than its factorization.

66407125127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396169.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 66407125127 in words is "sixty-six billion, four hundred seven million, one hundred twenty-five thousand, one hundred twenty-seven".