2159189329665 has 16 divisors (see below), whose sum is σ = 3454821734976. Its totient is φ = 1151528040000.

The previous prime is 2159189329639. The next prime is 2159189329691. The reversal of 2159189329665 is 5669239819512.

It is an interprime number because it is at equal distance from previous prime (2159189329639) and next prime (2159189329691).

It is not a de Polignac number, because 2159189329665 - 2²⁷ = 2159055111937 is a prime.

It is a super-2 number, since 2×2159189329665² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2159189329596 and 2159189329605.

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, 2021766 + ... + 2899295.

It is an arithmetic number, because the mean of its divisors is an integer number (215926358436).

Almost surely, 2^{2159189329665} is an apocalyptic number.

It is an amenable number.

2159189329665 is a deficient number, since it is larger than the sum of its proper divisors (1295632405311).

2159189329665 is a wasteful number, since it uses less digits than its factorization.

2159189329665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950320.

The product of its digits is 62985600, while the sum is 66.

The spelling of 2159189329665 in words is "two trillion, one hundred fifty-nine billion, one hundred eighty-nine million, three hundred twenty-nine thousand, six hundred sixty-five".