66047267271 has 16 divisors (see below), whose sum is σ = 89894803968. Its totient is φ = 43123836000.

The previous prime is 66047267269. The next prime is 66047267327. The reversal of 66047267271 is 17276274066.

It is a happy number.

It is not a de Polignac number, because 66047267271 - 2¹ = 66047267269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66047267271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66047267201) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 994596 + ... + 1058921.

It is an arithmetic number, because the mean of its divisors is an integer number (5618425248).

Almost surely, 2^66047267271 is an apocalyptic number.

66047267271 is a deficient number, since it is larger than the sum of its proper divisors (23847536697).

66047267271 is a wasteful number, since it uses less digits than its factorization.

66047267271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053742.

The product of its (nonzero) digits is 1185408, while the sum is 48.

The spelling of 66047267271 in words is "sixty-six billion, forty-seven million, two hundred sixty-seven thousand, two hundred seventy-one".