66270252280 has 16 divisors (see below), whose sum is σ = 149108067720. Its totient is φ = 26508100896.

The previous prime is 66270252271. The next prime is 66270252283. The reversal of 66270252280 is 8225207266.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1656756307 = 66270252280 / (6 + 6 + 2 + 7 + 0 + 2 + 5 + 2 + 2 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66270252283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828378114 + ... + 828378193.

Almost surely, 2^66270252280 is an apocalyptic number.

It is an amenable number.

66270252280 is an abundant number, since it is smaller than the sum of its proper divisors (82837815440).

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

66270252280 is a wasteful number, since it uses less digits than its factorization.

66270252280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656756318 (or 1656756314 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 66270252280 in words is "sixty-six billion, two hundred seventy million, two hundred fifty-two thousand, two hundred eighty".