66774233013 has 16 divisors (see below), whose sum is σ = 89424335616. Its totient is φ = 44320550400.

The previous prime is 66774232979. The next prime is 66774233021. The reversal of 66774233013 is 31033247766.

It is not a de Polignac number, because 66774233013 - 2¹⁰ = 66774231989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66774233093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611245 + ... + 712157.

It is an arithmetic number, because the mean of its divisors is an integer number (5589020976).

Almost surely, 2^66774233013 is an apocalyptic number.

It is an amenable number.

66774233013 is a deficient number, since it is larger than the sum of its proper divisors (22650102603).

66774233013 is a wasteful number, since it uses less digits than its factorization.

66774233013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101884.

The product of its (nonzero) digits is 381024, while the sum is 42.

The spelling of 66774233013 in words is "sixty-six billion, seven hundred seventy-four million, two hundred thirty-three thousand, thirteen".