66428068048404 has 48 divisors (see below), whose sum is σ = 164127059103168. Its totient is φ = 20838825107968.

The previous prime is 66428068048393. The next prime is 66428068048417. The reversal of 66428068048404 is 40484086082466.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7419162 + ... + 13707665.

It is an arithmetic number, because the mean of its divisors is an integer number (3419313731316).

Almost surely, 2^{66428068048404} is an apocalyptic number.

It is an amenable number.

66428068048404 is an abundant number, since it is smaller than the sum of its proper divisors (97698991054764).

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

66428068048404 is a wasteful number, since it uses less digits than its factorization.

66428068048404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21142264 (or 21142262 counting only the distinct ones).

The product of its (nonzero) digits is 56623104, while the sum is 60.

The spelling of 66428068048404 in words is "sixty-six trillion, four hundred twenty-eight billion, sixty-eight million, forty-eight thousand, four hundred four".