20211052795440 has 160 divisors (see below), whose sum is σ = 67475710653120. Its totient is φ = 4974889156608.

The previous prime is 20211052795433. The next prime is 20211052795489. The reversal of 20211052795440 is 4459725011202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20211052795392 and 20211052795401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152667196 + ... + 152799524.

It is an arithmetic number, because the mean of its divisors is an integer number (421723191582).

Almost surely, 2^{20211052795440} is an apocalyptic number.

20211052795440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211052795440 is an abundant number, since it is smaller than the sum of its proper divisors (47264657857680).

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

20211052795440 is a wasteful number, since it uses less digits than its factorization.

20211052795440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181311 (or 181305 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 20211052795440 in words is "twenty trillion, two hundred eleven billion, fifty-two million, seven hundred ninety-five thousand, four hundred forty".