66772288511803 has 12 divisors (see below), whose sum is σ = 77674108459032. Its totient is φ = 57233226704640.

The previous prime is 66772288511801. The next prime is 66772288511809. The reversal of 66772288511803 is 30811588227766.

It is not a de Polignac number, because 66772288511803 - 2¹ = 66772288511801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66772288511801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17312508 + ... + 20815078.

It is an arithmetic number, because the mean of its divisors is an integer number (6472842371586).

Almost surely, 2^{66772288511803} is an apocalyptic number.

66772288511803 is a deficient number, since it is larger than the sum of its proper divisors (10901819947229).

66772288511803 is a wasteful number, since it uses less digits than its factorization.

66772288511803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3891642 (or 3891635 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 64.

The spelling of 66772288511803 in words is "sixty-six trillion, seven hundred seventy-two billion, two hundred eighty-eight million, five hundred eleven thousand, eight hundred three".