2165615063 has 8 divisors (see below), whose sum is σ = 2217511296. Its totient is φ = 2113788600.

The previous prime is 2165615047. The next prime is 2165615183. The reversal of 2165615063 is 3605165612.

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 2165615063 - 2⁴ = 2165615047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165615863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48308 + ... + 81638.

It is an arithmetic number, because the mean of its divisors is an integer number (277188912).

Almost surely, 2^2165615063 is an apocalyptic number.

2165615063 is a deficient number, since it is larger than the sum of its proper divisors (51896233).

2165615063 is a wasteful number, since it uses less digits than its factorization.

2165615063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34885.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 2165615063 is about 46536.1694061727. The cubic root of 2165615063 is about 1293.7799639322.

The spelling of 2165615063 in words is "two billion, one hundred sixty-five million, six hundred fifteen thousand, sixty-three".