1055123443503 has 24 divisors (see below), whose sum is σ = 1573395472896. Its totient is φ = 680653486800.

The previous prime is 1055123443469. The next prime is 1055123443531. The reversal of 1055123443503 is 3053443215501.

1055123443503 is a `hidden beast` number, since 10 + 551 + 2 + 3 + 4 + 43 + 50 + 3 = 666.

It is not a de Polignac number, because 1055123443503 - 2¹⁴ = 1055123427119 is a prime.

It is a super-2 number, since 2×1055123443503² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055123443103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2537368 + ... + 2923778.

It is an arithmetic number, because the mean of its divisors is an integer number (65558144704).

Almost surely, 2^{1055123443503} is an apocalyptic number.

1055123443503 is a deficient number, since it is larger than the sum of its proper divisors (518272029393).

1055123443503 is a wasteful number, since it uses less digits than its factorization.

1055123443503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396235 (or 396232 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 1055123443503 in words is "one trillion, fifty-five billion, one hundred twenty-three million, four hundred forty-three thousand, five hundred three".