66271699470 has 16 divisors (see below), whose sum is σ = 159052078800. Its totient is φ = 17672453184.

The previous prime is 66271699463. The next prime is 66271699489. The reversal of 66271699470 is 7499617266.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66271699470.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104528295 + ... + 1104528354.

It is an arithmetic number, because the mean of its divisors is an integer number (9940754925).

Almost surely, 2^66271699470 is an apocalyptic number.

66271699470 is an abundant number, since it is smaller than the sum of its proper divisors (92780379330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66271699470 is a wasteful number, since it uses less digits than its factorization.

66271699470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209056659.

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 66271699470 in words is "sixty-six billion, two hundred seventy-one million, six hundred ninety-nine thousand, four hundred seventy".