2161514545514 has 32 divisors (see below), whose sum is σ = 3470345649936. Its totient is φ = 1006135603200.

The previous prime is 2161514545511. The next prime is 2161514545627. The reversal of 2161514545514 is 4155454151612.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1976085267289 + 185429278225 = 1405733^2 + 430615^2 .

It is not an unprimeable number, because it can be changed into a prime (2161514545511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3242654 + ... + 3851990.

Almost surely, 2^{2161514545514} is an apocalyptic number.

2161514545514 is a deficient number, since it is larger than the sum of its proper divisors (1308831104422).

2161514545514 is a wasteful number, since it uses less digits than its factorization.

2161514545514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610490.

The product of its digits is 480000, while the sum is 44.

The spelling of 2161514545514 in words is "two trillion, one hundred sixty-one billion, five hundred fourteen million, five hundred forty-five thousand, five hundred fourteen".