22018128620 has 48 divisors (see below), whose sum is σ = 48691177920. Its totient is φ = 8347021056.

The previous prime is 22018128553. The next prime is 22018128637. The reversal of 22018128620 is 2682181022.

It is a super-3 number, since 3×22018128620³ (a number of 32 digits) contains 333 as substring.

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, 169427 + ... + 269706.

It is an arithmetic number, because the mean of its divisors is an integer number (1014399540).

Almost surely, 2^22018128620 is an apocalyptic number.

22018128620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22018128620 is an abundant number, since it is smaller than the sum of its proper divisors (26673049300).

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

22018128620 is a wasteful number, since it uses less digits than its factorization.

22018128620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439274 (or 439272 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The spelling of 22018128620 in words is "twenty-two billion, eighteen million, one hundred twenty-eight thousand, six hundred twenty".