66109214280 has 64 divisors (see below), whose sum is σ = 198367467840. Its totient is φ = 17625583872.

The previous prime is 66109214279. The next prime is 66109214411. The reversal of 66109214280 is 8241290166.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574542 + ... + 679938.

It is an arithmetic number, because the mean of its divisors is an integer number (3099491685).

Almost surely, 2^66109214280 is an apocalyptic number.

66109214280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66109214280 is an abundant number, since it is smaller than the sum of its proper divisors (132258253560).

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

66109214280 is a wasteful number, since it uses less digits than its factorization.

66109214280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110638 (or 110634 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 66109214280 in words is "sixty-six billion, one hundred nine million, two hundred fourteen thousand, two hundred eighty".