2161061403303 has 16 divisors (see below), whose sum is σ = 3145823623296. Its totient is φ = 1308708524640.

The previous prime is 2161061403287. The next prime is 2161061403349. The reversal of 2161061403303 is 3033041601612.

It is not a de Polignac number, because 2161061403303 - 2⁴ = 2161061403287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161061403703) 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, 25598701 + ... + 25682982.

It is an arithmetic number, because the mean of its divisors is an integer number (196613976456).

Almost surely, 2^{2161061403303} is an apocalyptic number.

2161061403303 is a deficient number, since it is larger than the sum of its proper divisors (984762219993).

2161061403303 is a wasteful number, since it uses less digits than its factorization.

2161061403303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51282974.

The product of its (nonzero) digits is 7776, while the sum is 30.

The spelling of 2161061403303 in words is "two trillion, one hundred sixty-one billion, sixty-one million, four hundred three thousand, three hundred three".