2261665450143 has 24 divisors (see below), whose sum is σ = 3718785882240. Its totient is φ = 1311110404560.

The previous prime is 2261665450111. The next prime is 2261665450147. The reversal of 2261665450143 is 3410545661622.

2261665450143 is a `hidden beast` number, since 2 + 2 + 6 + 1 + 66 + 545 + 0 + 1 + 43 = 666.

It is not a de Polignac number, because 2261665450143 - 2⁵ = 2261665450111 is a prime.

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 496630453 + ... + 496635006.

It is an arithmetic number, because the mean of its divisors is an integer number (154949411760).

Almost surely, 2^{2261665450143} is an apocalyptic number.

2261665450143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2261665450143 is a deficient number, since it is larger than the sum of its proper divisors (1457120432097).

2261665450143 is a wasteful number, since it uses less digits than its factorization.

2261665450143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993265499 (or 993265496 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 2261665450143 in words is "two trillion, two hundred sixty-one billion, six hundred sixty-five million, four hundred fifty thousand, one hundred forty-three".