2661373223 has 2 divisors, whose sum is σ = 2661373224. Its totient is φ = 2661373222.

The previous prime is 2661373201. The next prime is 2661373249. The reversal of 2661373223 is 3223731662.

2661373223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2661373223 - 2²⁶ = 2594264359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661373283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330686611 + 1330686612.

It is an arithmetic number, because the mean of its divisors is an integer number (1330686612).

Almost surely, 2^2661373223 is an apocalyptic number.

2661373223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661373223 is an equidigital number, since it uses as much as digits as its factorization.

2661373223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 35.

The square root of 2661373223 is about 51588.4989411400. The cubic root of 2661373223 is about 1385.8043736829.

The spelling of 2661373223 in words is "two billion, six hundred sixty-one million, three hundred seventy-three thousand, two hundred twenty-three".