2161255423 has 8 divisors (see below), whose sum is σ = 2187377280. Its totient is φ = 2135279640.

The previous prime is 2161255417. The next prime is 2161255429. The reversal of 2161255423 is 3245521612.

2161255423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2161255417) and next prime (2161255429).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2161255423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161255429) 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, 6603 + ... + 66076.

It is an arithmetic number, because the mean of its divisors is an integer number (273422160).

Almost surely, 2^2161255423 is an apocalyptic number.

2161255423 is a deficient number, since it is larger than the sum of its proper divisors (26121857).

2161255423 is a wasteful number, since it uses less digits than its factorization.

2161255423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73037.

The product of its digits is 14400, while the sum is 31.

The square root of 2161255423 is about 46489.3043935914. The cubic root of 2161255423 is about 1292.9112031879.

The spelling of 2161255423 in words is "two billion, one hundred sixty-one million, two hundred fifty-five thousand, four hundred twenty-three".