2600661923 has 4 divisors (see below), whose sum is σ = 2600764080. Its totient is φ = 2600559768.

The previous prime is 2600661919. The next prime is 2600661937. The reversal of 2600661923 is 3291660062.

2600661923 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 brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2600661923 - 2² = 2600661919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2600601923) 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, 21218 + ... + 75176.

It is an arithmetic number, because the mean of its divisors is an integer number (650191020).

Almost surely, 2^2600661923 is an apocalyptic number.

2600661923 is a deficient number, since it is larger than the sum of its proper divisors (102157).

2600661923 is an equidigital number, since it uses as much as digits as its factorization.

2600661923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102156.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 2600661923 is about 50996.6854118971. The cubic root of 2600661923 is about 1375.1855481613.

The spelling of 2600661923 in words is "two billion, six hundred million, six hundred sixty-one thousand, nine hundred twenty-three".