66825303380 has 24 divisors (see below), whose sum is σ = 153090695520. Its totient is φ = 24300110240.

The previous prime is 66825303373. The next prime is 66825303401. The reversal of 66825303380 is 8330352866.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151875470 + ... + 151875909.

It is an arithmetic number, because the mean of its divisors is an integer number (6378778980).

Almost surely, 2^66825303380 is an apocalyptic number.

It is an amenable number.

66825303380 is an abundant number, since it is smaller than the sum of its proper divisors (86265392140).

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

66825303380 is a wasteful number, since it uses less digits than its factorization.

66825303380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303751399 (or 303751397 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 66825303380 in words is "sixty-six billion, eight hundred twenty-five million, three hundred three thousand, three hundred eighty".