2656407823 has 2 divisors, whose sum is σ = 2656407824. Its totient is φ = 2656407822.

The previous prime is 2656407821. The next prime is 2656407827. The reversal of 2656407823 is 3287046562.

2656407823 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 2656407823 - 2¹ = 2656407821 is a prime.

Together with 2656407821, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2656407823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2656407821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328203911 + 1328203912.

It is an arithmetic number, because the mean of its divisors is an integer number (1328203912).

Almost surely, 2^2656407823 is an apocalyptic number.

2656407823 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656407823 is an equidigital number, since it uses as much as digits as its factorization.

2656407823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 2656407823 is about 51540.3514054765. The cubic root of 2656407823 is about 1384.9419922096.

The spelling of 2656407823 in words is "two billion, six hundred fifty-six million, four hundred seven thousand, eight hundred twenty-three".