1045503561123 has 24 divisors (see below), whose sum is σ = 1816748044800. Its totient is φ = 565986889584.

The previous prime is 1045503561103. The next prime is 1045503561139. The reversal of 1045503561123 is 3211653055401.

1045503561123 is a `hidden beast` number, since 1 + 0 + 4 + 5 + 5 + 0 + 35 + 611 + 2 + 3 = 666.

It is not a de Polignac number, because 1045503561123 - 2⁹ = 1045503560611 is a prime.

It is a super-2 number, since 2×1045503561123² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1045503561103) 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, 436717083 + ... + 436719476.

It is an arithmetic number, because the mean of its divisors is an integer number (75697835200).

Almost surely, 2^{1045503561123} is an apocalyptic number.

1045503561123 is a deficient number, since it is larger than the sum of its proper divisors (771244483677).

1045503561123 is a wasteful number, since it uses less digits than its factorization.

1045503561123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873436591 (or 873436588 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 1045503561123 in words is "one trillion, forty-five billion, five hundred three million, five hundred sixty-one thousand, one hundred twenty-three".