66455712444 has 72 divisors (see below), whose sum is σ = 179412190720. Its totient is φ = 19078187040.

The previous prime is 66455712419. The next prime is 66455712467. The reversal of 66455712444 is 44421755466.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66455712393 and 66455712402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1176844 + ... + 1232019.

Almost surely, 2^66455712444 is an apocalyptic number.

It is an amenable number.

66455712444 is an abundant number, since it is smaller than the sum of its proper divisors (112956478276).

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

66455712444 is a wasteful number, since it uses less digits than its factorization.

66455712444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408911 (or 2408898 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 48.

The spelling of 66455712444 in words is "sixty-six billion, four hundred fifty-five million, seven hundred twelve thousand, four hundred forty-four".