20440885355 has 8 divisors (see below), whose sum is σ = 26758977264. Its totient is φ = 14866098400.

The previous prime is 20440885351. The next prime is 20440885373. The reversal of 20440885355 is 55358804402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20440885355 - 2² = 20440885351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20440885351) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 185826176 + ... + 185826285.

It is an arithmetic number, because the mean of its divisors is an integer number (3344872158).

Almost surely, 2^20440885355 is an apocalyptic number.

20440885355 is a deficient number, since it is larger than the sum of its proper divisors (6318091909).

20440885355 is a wasteful number, since it uses less digits than its factorization.

20440885355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371652477.

The product of its (nonzero) digits is 768000, while the sum is 44.

The spelling of 20440885355 in words is "twenty billion, four hundred forty million, eight hundred eighty-five thousand, three hundred fifty-five".