66463621456452 has 48 divisors (see below), whose sum is σ = 179131899546432. Its totient is φ = 18955756564480.

The previous prime is 66463621456433. The next prime is 66463621456459. The reversal of 66463621456452 is 25465412636466.

It is not an unprimeable number, because it can be changed into a prime (66463621456459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14809182573 + ... + 14809187060.

It is an arithmetic number, because the mean of its divisors is an integer number (3731914573884).

Almost surely, 2^{66463621456452} is an apocalyptic number.

It is an amenable number.

66463621456452 is an abundant number, since it is smaller than the sum of its proper divisors (112668278089980).

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

66463621456452 is a wasteful number, since it uses less digits than its factorization.

66463621456452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29618369668 (or 29618369666 counting only the distinct ones).

The product of its digits is 149299200, while the sum is 60.

The spelling of 66463621456452 in words is "sixty-six trillion, four hundred sixty-three billion, six hundred twenty-one million, four hundred fifty-six thousand, four hundred fifty-two".