2131554440255 has 4 divisors (see below), whose sum is σ = 2557865328312. Its totient is φ = 1705243552200.

The previous prime is 2131554440237. The next prime is 2131554440263. The reversal of 2131554440255 is 5520444551312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2131554440255 - 2¹⁴ = 2131554423871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213155444021 + ... + 213155444030.

It is an arithmetic number, because the mean of its divisors is an integer number (639466332078).

Almost surely, 2^{2131554440255} is an apocalyptic number.

2131554440255 is a deficient number, since it is larger than the sum of its proper divisors (426310888057).

2131554440255 is an equidigital number, since it uses as much as digits as its factorization.

2131554440255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426310888056.

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 2131554440255 its reverse (5520444551312), we get a palindrome (7651998991567).

The spelling of 2131554440255 in words is "two trillion, one hundred thirty-one billion, five hundred fifty-four million, four hundred forty thousand, two hundred fifty-five".