66263987488 has 48 divisors (see below), whose sum is σ = 134486019360. Its totient is φ = 32124197376.

The previous prime is 66263987467. The next prime is 66263987509. The reversal of 66263987488 is 88478936266.

It is an interprime number because it is at equal distance from previous prime (66263987467) and next prime (66263987509).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102570 + ... + 378217.

It is an arithmetic number, because the mean of its divisors is an integer number (2801792070).

Almost surely, 2^66263987488 is an apocalyptic number.

It is an amenable number.

66263987488 is an abundant number, since it is smaller than the sum of its proper divisors (68222031872).

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

66263987488 is a wasteful number, since it uses less digits than its factorization.

66263987488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480929 (or 480921 counting only the distinct ones).

The product of its digits is 167215104, while the sum is 67.

The spelling of 66263987488 in words is "sixty-six billion, two hundred sixty-three million, nine hundred eighty-seven thousand, four hundred eighty-eight".