66444600460 has 48 divisors (see below), whose sum is σ = 159557078016. Its totient is φ = 22768143552.

The previous prime is 66444600437. The next prime is 66444600491. The reversal of 66444600460 is 6400644466.

It is a happy 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, 116529 + ... + 382711.

It is an arithmetic number, because the mean of its divisors is an integer number (3324105792).

Almost surely, 2^66444600460 is an apocalyptic number.

It is an amenable number.

66444600460 is an abundant number, since it is smaller than the sum of its proper divisors (93112477556).

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

66444600460 is a wasteful number, since it uses less digits than its factorization.

66444600460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267982 (or 267980 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 66444600460 in words is "sixty-six billion, four hundred forty-four million, six hundred thousand, four hundred sixty".