66222234940 has 24 divisors (see below), whose sum is σ = 139919870160. Its totient is φ = 26326384128.

The previous prime is 66222234917. The next prime is 66222234977. The reversal of 66222234940 is 4943222266.

It is a junction number, because it is equal to n+sod(n) for n = 66222234893 and 66222234902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10153525 + ... + 10160044.

It is an arithmetic number, because the mean of its divisors is an integer number (5829994590).

Almost surely, 2^66222234940 is an apocalyptic number.

It is an amenable number.

66222234940 is an abundant number, since it is smaller than the sum of its proper divisors (73697635220).

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

66222234940 is a wasteful number, since it uses less digits than its factorization.

66222234940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20313741 (or 20313739 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 66222234940 in words is "sixty-six billion, two hundred twenty-two million, two hundred thirty-four thousand, nine hundred forty".