2145143115565 has 8 divisors (see below), whose sum is σ = 2574333538560. Its totient is φ = 1716006625872.

The previous prime is 2145143115553. The next prime is 2145143115623. The reversal of 2145143115565 is 5655113415412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2145143115565 - 2¹¹ = 2145143113517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13395769 + ... + 13554958.

It is an arithmetic number, because the mean of its divisors is an integer number (321791692320).

Almost surely, 2^{2145143115565} is an apocalyptic number.

It is an amenable number.

2145143115565 is a deficient number, since it is larger than the sum of its proper divisors (429190422995).

2145143115565 is a wasteful number, since it uses less digits than its factorization.

2145143115565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26966651.

The product of its digits is 360000, while the sum is 43.

The spelling of 2145143115565 in words is "two trillion, one hundred forty-five billion, one hundred forty-three million, one hundred fifteen thousand, five hundred sixty-five".