2721735161 has 4 divisors (see below), whose sum is σ = 2864984400. Its totient is φ = 2578485924.

The previous prime is 2721735143. The next prime is 2721735169. The reversal of 2721735161 is 1615371272.

2721735161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2721735161 - 2²² = 2717540857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2721735169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71624591 + ... + 71624628.

It is an arithmetic number, because the mean of its divisors is an integer number (716246100).

Almost surely, 2^2721735161 is an apocalyptic number.

It is an amenable number.

2721735161 is a deficient number, since it is larger than the sum of its proper divisors (143249239).

2721735161 is a wasteful number, since it uses less digits than its factorization.

2721735161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143249238.

The product of its digits is 17640, while the sum is 35.

The square root of 2721735161 is about 52170.2516861861. The cubic root of 2721735161 is about 1396.2031750065.

The spelling of 2721735161 in words is "two billion, seven hundred twenty-one million, seven hundred thirty-five thousand, one hundred sixty-one".