66480251563 has 8 divisors (see below), whose sum is σ = 72527607360. Its totient is φ = 60433511880.

The previous prime is 66480251507. The next prime is 66480251567. The reversal of 66480251563 is 36515208466.

66480251563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66480251563 - 2¹³ = 66480243371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66480251567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88156 + ... + 375142.

It is an arithmetic number, because the mean of its divisors is an integer number (9065950920).

Almost surely, 2^66480251563 is an apocalyptic number.

66480251563 is a deficient number, since it is larger than the sum of its proper divisors (6047355797).

66480251563 is a wasteful number, since it uses less digits than its factorization.

66480251563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308057.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 66480251563 in words is "sixty-six billion, four hundred eighty million, two hundred fifty-one thousand, five hundred sixty-three".