66598922941 has 4 divisors (see below), whose sum is σ = 66614557084. Its totient is φ = 66583288800.

The previous prime is 66598922927. The next prime is 66598922947. The reversal of 66598922941 is 14922989566.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61859151225 + 4739771716 = 248715^2 + 68846^2 .

It is a cyclic number.

It is not a de Polignac number, because 66598922941 - 2⁷ = 66598922813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66598922941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66598922947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7810680 + ... + 7819201.

It is an arithmetic number, because the mean of its divisors is an integer number (16653639271).

Almost surely, 2^66598922941 is an apocalyptic number.

It is an amenable number.

66598922941 is a deficient number, since it is larger than the sum of its proper divisors (15634143).

66598922941 is a wasteful number, since it uses less digits than its factorization.

66598922941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15634142.

The product of its digits is 16796160, while the sum is 61.

The spelling of 66598922941 in words is "sixty-six billion, five hundred ninety-eight million, nine hundred twenty-two thousand, nine hundred forty-one".