2161696497 has 8 divisors (see below), whose sum is σ = 2909199456. Its totient is φ = 1427662272.

The previous prime is 2161696487. The next prime is 2161696517. The reversal of 2161696497 is 7946961612.

2161696497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2161696497 - 2¹⁵ = 2161663729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2161696417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3366808 + ... + 3367449.

It is an arithmetic number, because the mean of its divisors is an integer number (363649932).

Almost surely, 2^2161696497 is an apocalyptic number.

It is an amenable number.

2161696497 is a deficient number, since it is larger than the sum of its proper divisors (747502959).

2161696497 is a wasteful number, since it uses less digits than its factorization.

2161696497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6734367.

The product of its digits is 979776, while the sum is 51.

The square root of 2161696497 is about 46494.0479739074. The cubic root of 2161696497 is about 1292.9991506404. Note that the first 3 decimals are identical.

The spelling of 2161696497 in words is "two billion, one hundred sixty-one million, six hundred ninety-six thousand, four hundred ninety-seven".