66737473708 has 12 divisors (see below), whose sum is σ = 116793932472. Its totient is φ = 33367778720.

The previous prime is 66737473679. The next prime is 66737473717. The reversal of 66737473708 is 80737473766.

66737473708 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69385 + ... + 371872.

It is an arithmetic number, because the mean of its divisors is an integer number (9732827706).

Almost surely, 2^66737473708 is an apocalyptic number.

It is an amenable number.

66737473708 is a deficient number, since it is larger than the sum of its proper divisors (50056458764).

66737473708 is a wasteful number, since it uses less digits than its factorization.

66737473708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479072 (or 479070 counting only the distinct ones).

The product of its (nonzero) digits is 24893568, while the sum is 58.

Adding to 66737473708 its sum of digits (58), we get a palindrome (66737473766).

The spelling of 66737473708 in words is "sixty-six billion, seven hundred thirty-seven million, four hundred seventy-three thousand, seven hundred eight".