5821817082431 has 12 divisors (see below), whose sum is σ = 6787744547760. Its totient is φ = 4978761873120.

The previous prime is 5821817082427. The next prime is 5821817082449. The reversal of 5821817082431 is 1342807181285.

It is a happy number.

It is not a de Polignac number, because 5821817082431 - 2² = 5821817082427 is a prime.

It is a super-2 number, since 2×5821817082431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5821817082431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5821816082431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135300350 + ... + 135343371.

It is an arithmetic number, because the mean of its divisors is an integer number (565645378980).

Almost surely, 2^{5821817082431} is an apocalyptic number.

5821817082431 is a deficient number, since it is larger than the sum of its proper divisors (965927465329).

5821817082431 is a wasteful number, since it uses less digits than its factorization.

5821817082431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270644174 (or 270644167 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 50.

The spelling of 5821817082431 in words is "five trillion, eight hundred twenty-one billion, eight hundred seventeen million, eighty-two thousand, four hundred thirty-one".