66727156426 has 16 divisors (see below), whose sum is σ = 114446172096. Its totient is φ = 28583162496.

The previous prime is 66727156421. The next prime is 66727156439. The reversal of 66727156426 is 62465172766.

It is not an unprimeable number, because it can be changed into a prime (66727156421) 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, 1153276 + ... + 1209751.

It is an arithmetic number, because the mean of its divisors is an integer number (7152885756).

Almost surely, 2^66727156426 is an apocalyptic number.

66727156426 is a deficient number, since it is larger than the sum of its proper divisors (47719015670).

66727156426 is a wasteful number, since it uses less digits than its factorization.

66727156426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365053.

The product of its digits is 5080320, while the sum is 52.

The spelling of 66727156426 in words is "sixty-six billion, seven hundred twenty-seven million, one hundred fifty-six thousand, four hundred twenty-six".