66333696480 has 144 divisors (see below), whose sum is σ = 236205758880. Its totient is φ = 16919890944.

The previous prime is 66333696391. The next prime is 66333696509. The reversal of 66333696480 is 8469633366.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 968295 + ... + 1034534.

It is an arithmetic number, because the mean of its divisors is an integer number (1640317770).

Almost surely, 2^66333696480 is an apocalyptic number.

66333696480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66333696480 is an abundant number, since it is smaller than the sum of its proper divisors (169872062400).

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

66333696480 is a wasteful number, since it uses less digits than its factorization.

66333696480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002873 (or 2002862 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 54.

The spelling of 66333696480 in words is "sixty-six billion, three hundred thirty-three million, six hundred ninety-six thousand, four hundred eighty".