2183856278285 has 16 divisors (see below), whose sum is σ = 2858900812992. Its totient is φ = 1588239993600.

The previous prime is 2183856278281. The next prime is 2183856278291. The reversal of 2183856278285 is 5828726583812.

It is not a de Polignac number, because 2183856278285 - 2² = 2183856278281 is a prime.

It is a super-2 number, since 2×2183856278285² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2183856278281) 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, 5702690 + ... + 6073580.

It is an arithmetic number, because the mean of its divisors is an integer number (178681300812).

Almost surely, 2^{2183856278285} is an apocalyptic number.

It is an amenable number.

2183856278285 is a deficient number, since it is larger than the sum of its proper divisors (675044534707).

2183856278285 is a wasteful number, since it uses less digits than its factorization.

2183856278285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477964.

The product of its digits is 103219200, while the sum is 65.

The spelling of 2183856278285 in words is "two trillion, one hundred eighty-three billion, eight hundred fifty-six million, two hundred seventy-eight thousand, two hundred eighty-five".