1055231112145 has 16 divisors (see below), whose sum is σ = 1493857133568. Its totient is φ = 700245529920.

The previous prime is 1055231112109. The next prime is 1055231112163. The reversal of 1055231112145 is 5412111325501.

It is not a de Polignac number, because 1055231112145 - 2³⁹ = 505475298257 is a prime.

It is a super-2 number, since 2×1055231112145² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486280534 + ... + 486282703.

It is an arithmetic number, because the mean of its divisors is an integer number (93366070848).

Almost surely, 2^{1055231112145} is an apocalyptic number.

It is an amenable number.

1055231112145 is a deficient number, since it is larger than the sum of its proper divisors (438626021423).

1055231112145 is an equidigital number, since it uses as much as digits as its factorization.

1055231112145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972563280.

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 1055231112145 its reverse (5412111325501), we get a palindrome (6467342437646).

The spelling of 1055231112145 in words is "one trillion, fifty-five billion, two hundred thirty-one million, one hundred twelve thousand, one hundred forty-five".