66975441360 has 80 divisors (see below), whose sum is σ = 209258797056. Its totient is φ = 17719478784.

The previous prime is 66975441347. The next prime is 66975441367. The reversal of 66975441360 is 6314457966.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66975441367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1068199 + ... + 1129158.

Almost surely, 2^66975441360 is an apocalyptic number.

66975441360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66975441360 is an abundant number, since it is smaller than the sum of its proper divisors (142283355696).

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

66975441360 is a wasteful number, since it uses less digits than its factorization.

66975441360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197500 (or 2197494 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 66975441360 in words is "sixty-six billion, nine hundred seventy-five million, four hundred forty-one thousand, three hundred sixty".