1345120445543 has 16 divisors (see below), whose sum is σ = 1546269903360. Its totient is φ = 1146219229536.

The previous prime is 1345120445533. The next prime is 1345120445551. The reversal of 1345120445543 is 3455440215431.

It is a cyclic number.

It is not a de Polignac number, because 1345120445543 - 2¹² = 1345120441447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1345120445543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345120445533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25112396 + ... + 25165902.

It is an arithmetic number, because the mean of its divisors is an integer number (96641868960).

Almost surely, 2^{1345120445543} is an apocalyptic number.

1345120445543 is a deficient number, since it is larger than the sum of its proper divisors (201149457817).

1345120445543 is a wasteful number, since it uses less digits than its factorization.

1345120445543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74446.

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 1345120445543 in words is "one trillion, three hundred forty-five billion, one hundred twenty million, four hundred forty-five thousand, five hundred forty-three".