2161500540262 has 8 divisors (see below), whose sum is σ = 3705429497616. Its totient is φ = 926357374392.

The previous prime is 2161500540247. The next prime is 2161500540343. The reversal of 2161500540262 is 2620450051612.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77196447853 + ... + 77196447880.

It is an arithmetic number, because the mean of its divisors is an integer number (463178687202).

Almost surely, 2^{2161500540262} is an apocalyptic number.

2161500540262 is a deficient number, since it is larger than the sum of its proper divisors (1543928957354).

2161500540262 is a wasteful number, since it uses less digits than its factorization.

2161500540262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154392895742.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 2161500540262 its reverse (2620450051612), we get a palindrome (4781950591874).

The spelling of 2161500540262 in words is "two trillion, one hundred sixty-one billion, five hundred million, five hundred forty thousand, two hundred sixty-two".