2161460216642 has 8 divisors (see below), whose sum is σ = 3432907402956. Its totient is φ = 1017157748992.

The previous prime is 2161460216603. The next prime is 2161460216677. The reversal of 2161460216642 is 2466120641612.

It can be written as a sum of positive squares in 2 ways, for example, as 2058246446281 + 103213770361 = 1434659^2 + 321269^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2161460216642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31786179623 + ... + 31786179690.

Almost surely, 2^{2161460216642} is an apocalyptic number.

2161460216642 is a deficient number, since it is larger than the sum of its proper divisors (1271447186314).

2161460216642 is a wasteful number, since it uses less digits than its factorization.

2161460216642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63572359332.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 2161460216642 in words is "two trillion, one hundred sixty-one billion, four hundred sixty million, two hundred sixteen thousand, six hundred forty-two".