2161502303434 has 4 divisors (see below), whose sum is σ = 3242253455154. Its totient is φ = 1080751151716.

The previous prime is 2161502303419. The next prime is 2161502303473. The reversal of 2161502303434 is 4343032051612.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1657792727809 + 503709575625 = 1287553^2 + 709725^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2161502303434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540375575857 + ... + 540375575860.

Almost surely, 2^{2161502303434} is an apocalyptic number.

2161502303434 is a deficient number, since it is larger than the sum of its proper divisors (1080751151720).

2161502303434 is a wasteful number, since it uses less digits than its factorization.

2161502303434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080751151719.

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 2161502303434 in words is "two trillion, one hundred sixty-one billion, five hundred two million, three hundred three thousand, four hundred thirty-four".