20439353833850 has 48 divisors (see below), whose sum is σ = 43846834099200. Its totient is φ = 6943486898880.

The previous prime is 20439353833807. The next prime is 20439353833853. The reversal of 20439353833850 is 5833835393402.

It is a super-3 number, since 3×20439353833850³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20439353833853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267843290 + ... + 267919589.

It is an arithmetic number, because the mean of its divisors is an integer number (913475710400).

Almost surely, 2^{20439353833850} is an apocalyptic number.

20439353833850 is an abundant number, since it is smaller than the sum of its proper divisors (23407480265350).

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

20439353833850 is a wasteful number, since it uses less digits than its factorization.

20439353833850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535763007 (or 535763002 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 56.

It can be divided in two parts, 2043935 and 3833850, that added together give a palindrome (5877785).

The spelling of 20439353833850 in words is "twenty trillion, four hundred thirty-nine billion, three hundred fifty-three million, eight hundred thirty-three thousand, eight hundred fifty".