66802013480 has 32 divisors (see below), whose sum is σ = 150903375840. Its totient is φ = 26614344000.

The previous prime is 66802013461. The next prime is 66802013483. The reversal of 66802013480 is 8431020866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66802013483) 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, 3316754 + ... + 3336833.

It is an arithmetic number, because the mean of its divisors is an integer number (4715730495).

Almost surely, 2^66802013480 is an apocalyptic number.

It is an amenable number.

66802013480 is an abundant number, since it is smaller than the sum of its proper divisors (84101362360).

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

66802013480 is a wasteful number, since it uses less digits than its factorization.

66802013480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6653849 (or 6653845 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 66802013480 in words is "sixty-six billion, eight hundred two million, thirteen thousand, four hundred eighty".