66930253344 has 60 divisors (see below), whose sum is σ = 196840023534. Its totient is φ = 22310083584.

The previous prime is 66930253343. The next prime is 66930253349. The reversal of 66930253344 is 44335203966.

66930253344 is a `hidden beast` number, since 6 + 6 + 9 + 302 + 5 + 334 + 4 = 666.

66930253344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 42033200400 + 24897052944 = 205020^2 + 157788^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66930253344.

It is not an unprimeable number, because it can be changed into a prime (66930253343) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12908337 + ... + 12913520.

Almost surely, 2^66930253344 is an apocalyptic number.

It is an amenable number.

66930253344 is an abundant number, since it is smaller than the sum of its proper divisors (129909770190).

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

66930253344 is a wasteful number, since it uses less digits than its factorization.

66930253344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25821879 (or 25821862 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 45.

The spelling of 66930253344 in words is "sixty-six billion, nine hundred thirty million, two hundred fifty-three thousand, three hundred forty-four".