20278022496888 has 64 divisors (see below), whose sum is σ = 54596288154240. Its totient is φ = 6239207286144.

The previous prime is 20278022496883. The next prime is 20278022496889. The reversal of 20278022496888 is 88869422087202.

It is a super-2 number, since 2×20278022496888² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20278022496883) 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, 9816295 + ... + 11701097.

It is an arithmetic number, because the mean of its divisors is an integer number (853067002410).

Almost surely, 2^{20278022496888} is an apocalyptic number.

It is an amenable number.

20278022496888 is an abundant number, since it is smaller than the sum of its proper divisors (34318265657352).

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

20278022496888 is a wasteful number, since it uses less digits than its factorization.

20278022496888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919308 (or 1919304 counting only the distinct ones).

The product of its (nonzero) digits is 99090432, while the sum is 66.

The spelling of 20278022496888 in words is "twenty trillion, two hundred seventy-eight billion, twenty-two million, four hundred ninety-six thousand, eight hundred eighty-eight".