2155824936459 has 8 divisors (see below), whose sum is σ = 3193814720720. Its totient is φ = 1437216624288.

The previous prime is 2155824936449. The next prime is 2155824936509. The reversal of 2155824936459 is 9546394285512.

2155824936459 is a `hidden beast` number, since 2 + 1 + 5 + 5 + 82 + 493 + 64 + 5 + 9 = 666.

It is not a de Polignac number, because 2155824936459 - 2¹⁶ = 2155824870923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2155824936396 and 2155824936405.

It is not an unprimeable number, because it can be changed into a prime (2155824936409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39922683982 + ... + 39922684035.

It is an arithmetic number, because the mean of its divisors is an integer number (399226840090).

Almost surely, 2^{2155824936459} is an apocalyptic number.

2155824936459 is a deficient number, since it is larger than the sum of its proper divisors (1037989784261).

2155824936459 is an equidigital number, since it uses as much as digits as its factorization.

2155824936459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79845368026 (or 79845368020 counting only the distinct ones).

The product of its digits is 93312000, while the sum is 63.

The spelling of 2155824936459 in words is "two trillion, one hundred fifty-five billion, eight hundred twenty-four million, nine hundred thirty-six thousand, four hundred fifty-nine".