1123818854455 has 16 divisors (see below), whose sum is σ = 1471462557984. Its totient is φ = 817166407680.

The previous prime is 1123818854453. The next prime is 1123818854563. The reversal of 1123818854455 is 5544588183211.

It is not a de Polignac number, because 1123818854455 - 2¹ = 1123818854453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123818854396 and 1123818854405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123818854453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1664514 + ... + 2240143.

It is an arithmetic number, because the mean of its divisors is an integer number (91966409874).

Almost surely, 2^{1123818854455} is an apocalyptic number.

1123818854455 is a deficient number, since it is larger than the sum of its proper divisors (347643703529).

1123818854455 is a wasteful number, since it uses less digits than its factorization.

1123818854455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3909906.

The product of its digits is 6144000, while the sum is 55.

The spelling of 1123818854455 in words is "one trillion, one hundred twenty-three billion, eight hundred eighteen million, eight hundred fifty-four thousand, four hundred fifty-five".