2145111775434 has 12 divisors (see below), whose sum is σ = 4647742180146. Its totient is φ = 715037258472.

The previous prime is 2145111775361. The next prime is 2145111775439. The reversal of 2145111775434 is 4345771115412.

2145111775434 is a `hidden beast` number, since 2 + 1 + 45 + 1 + 1 + 177 + 5 + 434 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1387559134809 + 757552640625 = 1177947^2 + 870375^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2145111775434.

It is not an unprimeable number, because it can be changed into a prime (2145111775439) 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 5 ways as a sum of consecutive naturals, for example, 59586438189 + ... + 59586438224.

Almost surely, 2^{2145111775434} is an apocalyptic number.

2145111775434 is an abundant number, since it is smaller than the sum of its proper divisors (2502630404712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145111775434 is a wasteful number, since it uses less digits than its factorization.

2145111775434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119172876421 (or 119172876418 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The spelling of 2145111775434 in words is "two trillion, one hundred forty-five billion, one hundred eleven million, seven hundred seventy-five thousand, four hundred thirty-four".