42783350421261 has 16 divisors (see below), whose sum is σ = 58037978718720. Its totient is φ = 28029705578160.

The previous prime is 42783350421221. The next prime is 42783350421319. The reversal of 42783350421261 is 16212405338724.

It is not a de Polignac number, because 42783350421261 - 2⁶ = 42783350421197 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42783350421261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42783350421221) 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, 528423051 + ... + 528504008.

It is an arithmetic number, because the mean of its divisors is an integer number (3627373669920).

Almost surely, 2^{42783350421261} is an apocalyptic number.

It is an amenable number.

42783350421261 is a deficient number, since it is larger than the sum of its proper divisors (15254628297459).

42783350421261 is a wasteful number, since it uses less digits than its factorization.

42783350421261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056927296.

The product of its (nonzero) digits is 1935360, while the sum is 48.

Adding to 42783350421261 its reverse (16212405338724), we get a palindrome (58995755759985).

The spelling of 42783350421261 in words is "forty-two trillion, seven hundred eighty-three billion, three hundred fifty million, four hundred twenty-one thousand, two hundred sixty-one".