2656405013 has 2 divisors, whose sum is σ = 2656405014. Its totient is φ = 2656405012.

The previous prime is 2656405007. The next prime is 2656405027. The reversal of 2656405013 is 3105046562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1955585284 + 700819729 = 44222^2 + 26473^2 .

It is a cyclic number.

It is not a de Polignac number, because 2656405013 - 2¹⁰ = 2656403989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2656405093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328202506 + 1328202507.

It is an arithmetic number, because the mean of its divisors is an integer number (1328202507).

Almost surely, 2^2656405013 is an apocalyptic number.

It is an amenable number.

2656405013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656405013 is an equidigital number, since it uses as much as digits as its factorization.

2656405013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 2656405013 is about 51540.3241452748. The cubic root of 2656405013 is about 1384.9415038699.

The spelling of 2656405013 in words is "two billion, six hundred fifty-six million, four hundred five thousand, thirteen".