2161535544002 has 8 divisors (see below), whose sum is σ = 3321383884812. Its totient is φ = 1054407582400.

The previous prime is 2161535543987. The next prime is 2161535544079. The reversal of 2161535544002 is 2004455351612.

It can be written as a sum of positive squares in 2 ways, for example, as 2052311242921 + 109224301081 = 1432589^2 + 330491^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 13180094699 + ... + 13180094862.

Almost surely, 2^{2161535544002} is an apocalyptic number.

2161535544002 is a deficient number, since it is larger than the sum of its proper divisors (1159848340810).

2161535544002 is a wasteful number, since it uses less digits than its factorization.

2161535544002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26360189604.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 2161535544002 in words is "two trillion, one hundred sixty-one billion, five hundred thirty-five million, five hundred forty-four thousand, two".