2163505134665 has 16 divisors (see below), whose sum is σ = 3062805427200. Its totient is φ = 1435690042560.

The previous prime is 2163505134631. The next prime is 2163505134677. The reversal of 2163505134665 is 5664315053612.

It is not a de Polignac number, because 2163505134665 - 2⁸ = 2163505134409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997005890 + ... + 997008059.

It is an arithmetic number, because the mean of its divisors is an integer number (191425339200).

Almost surely, 2^{2163505134665} is an apocalyptic number.

It is an amenable number.

2163505134665 is a deficient number, since it is larger than the sum of its proper divisors (899300292535).

2163505134665 is a wasteful number, since it uses less digits than its factorization.

2163505134665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994013992.

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 2163505134665 in words is "two trillion, one hundred sixty-three billion, five hundred five million, one hundred thirty-four thousand, six hundred sixty-five".