66622315005 has 12 divisors (see below), whose sum is σ = 115478679420. Its totient is φ = 35531901312.

The previous prime is 66622314893. The next prime is 66622315013. The reversal of 66622315005 is 50051322666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42194500569 + 24427814436 = 205413^2 + 156294^2 .

It is not a de Polignac number, because 66622315005 - 2⁸ = 66622314749 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740247900 + ... + 740247989.

It is an arithmetic number, because the mean of its divisors is an integer number (9623223285).

Almost surely, 2^66622315005 is an apocalyptic number.

It is an amenable number.

66622315005 is a deficient number, since it is larger than the sum of its proper divisors (48856364415).

66622315005 is a wasteful number, since it uses less digits than its factorization.

66622315005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480495900 (or 1480495897 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 66622315005 in words is "sixty-six billion, six hundred twenty-two million, three hundred fifteen thousand, five".