66415363244 has 6 divisors (see below), whose sum is σ = 116226885684. Its totient is φ = 33207681620.

The previous prime is 66415363177. The next prime is 66415363253. The reversal of 66415363244 is 44236351466.

66415363244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66415363244² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66415363195 and 66415363204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8301920402 + ... + 8301920409.

It is an arithmetic number, because the mean of its divisors is an integer number (19371147614).

Almost surely, 2^66415363244 is an apocalyptic number.

It is an amenable number.

66415363244 is a deficient number, since it is larger than the sum of its proper divisors (49811522440).

66415363244 is a wasteful number, since it uses less digits than its factorization.

66415363244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16603840815 (or 16603840813 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 44.

The spelling of 66415363244 in words is "sixty-six billion, four hundred fifteen million, three hundred sixty-three thousand, two hundred forty-four".