66614789448 has 56 divisors (see below), whose sum is σ = 187268444550. Its totient is φ = 22204927872.

The previous prime is 66614789447. The next prime is 66614789453. The reversal of 66614789448 is 84498741666.

It can be written as a sum of positive squares in only one way, i.e., 55101928644 + 11512860804 = 234738^2 + 107298^2 .

It is not an unprimeable number, because it can be changed into a prime (66614789447) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 5705313 + ... + 5716976.

Almost surely, 2^66614789448 is an apocalyptic number.

It is an amenable number.

66614789448 is an abundant number, since it is smaller than the sum of its proper divisors (120653655102).

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

66614789448 is a wasteful number, since it uses less digits than its factorization.

66614789448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11422313 (or 11422294 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 63.

The spelling of 66614789448 in words is "sixty-six billion, six hundred fourteen million, seven hundred eighty-nine thousand, four hundred forty-eight".