66690379104 has 36 divisors (see below), whose sum is σ = 175068887364. Its totient is φ = 22229282944.

The previous prime is 66690379103. The next prime is 66690379111. The reversal of 66690379104 is 40197309666.

66690379104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66690379103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2517094 + ... + 2543450.

It is an arithmetic number, because the mean of its divisors is an integer number (4863024649).

Almost surely, 2^66690379104 is an apocalyptic number.

It is an amenable number.

66690379104 is an abundant number, since it is smaller than the sum of its proper divisors (108378508260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66690379104 is an frugal number, since it uses more digits than its factorization.

66690379104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52727 (or 26362 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

The spelling of 66690379104 in words is "sixty-six billion, six hundred ninety million, three hundred seventy-nine thousand, one hundred four".