2261665450142 has 48 divisors (see below), whose sum is σ = 4322601981360. Its totient is φ = 880810866432.

The previous prime is 2261665450111. The next prime is 2261665450147. The reversal of 2261665450142 is 2410545661622.

It is a junction number, because it is equal to n+sod(n) for n = 2261665450093 and 2261665450102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261665450147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23357588 + ... + 23454215.

It is an arithmetic number, because the mean of its divisors is an integer number (90054207945).

Almost surely, 2^{2261665450142} is an apocalyptic number.

2261665450142 is a deficient number, since it is larger than the sum of its proper divisors (2060936531218).

2261665450142 is a wasteful number, since it uses less digits than its factorization.

2261665450142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46811865 (or 46811858 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 2261665450142 in words is "two trillion, two hundred sixty-one billion, six hundred sixty-five million, four hundred fifty thousand, one hundred forty-two".