66489298416 has 60 divisors (see below), whose sum is σ = 192969466872. Its totient is φ = 22163098176.

The previous prime is 66489298373. The next prime is 66489298429. The reversal of 66489298416 is 61489298466.

66489298416 is a `hidden beast` number, since 6 + 6 + 48 + 92 + 98 + 416 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8546691 + ... + 8554466.

Almost surely, 2^66489298416 is an apocalyptic number.

It is an amenable number.

66489298416 is an abundant number, since it is smaller than the sum of its proper divisors (126480168456).

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

66489298416 is a wasteful number, since it uses less digits than its factorization.

66489298416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17101180 (or 17101162 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 63.

The spelling of 66489298416 in words is "sixty-six billion, four hundred eighty-nine million, two hundred ninety-eight thousand, four hundred sixteen".