64825453666 has 16 divisors (see below), whose sum is σ = 99652508928. Its totient is φ = 31608628000.

The previous prime is 64825453631. The next prime is 64825453681. The reversal of 64825453666 is 66635452846.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24651 + ... + 360913.

It is an arithmetic number, because the mean of its divisors is an integer number (6228281808).

Almost surely, 2^64825453666 is an apocalyptic number.

64825453666 is a deficient number, since it is larger than the sum of its proper divisors (34827055262).

64825453666 is a wasteful number, since it uses less digits than its factorization.

64825453666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338657.

The product of its digits is 24883200, while the sum is 55.

The spelling of 64825453666 in words is "sixty-four billion, eight hundred twenty-five million, four hundred fifty-three thousand, six hundred sixty-six".