66574075127 has 16 divisors (see below), whose sum is σ = 78744363840. Its totient is φ = 55070518272.

The previous prime is 66574075111. The next prime is 66574075133. The reversal of 66574075127 is 72157047566.

It is not a de Polignac number, because 66574075127 - 2⁴ = 66574075111 is a prime.

It is a super-2 number, since 2×66574075127² (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 (66574075147) 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, 375143 + ... + 523335.

It is an arithmetic number, because the mean of its divisors is an integer number (4921522740).

Almost surely, 2^66574075127 is an apocalyptic number.

66574075127 is a deficient number, since it is larger than the sum of its proper divisors (12170288713).

66574075127 is a wasteful number, since it uses less digits than its factorization.

66574075127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150442.

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 66574075127 in words is "sixty-six billion, five hundred seventy-four million, seventy-five thousand, one hundred twenty-seven".