2656456511 has 2 divisors, whose sum is σ = 2656456512. Its totient is φ = 2656456510.

The previous prime is 2656456501. The next prime is 2656456529. The reversal of 2656456511 is 1156546562.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2656456511 is a prime.

It is a super-2 number, since 2×2656456511² = 14113522389668586242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2656456501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328228255 + 1328228256.

It is an arithmetic number, because the mean of its divisors is an integer number (1328228256).

Almost surely, 2^2656456511 is an apocalyptic number.

2656456511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656456511 is an equidigital number, since it uses as much as digits as its factorization.

2656456511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 41.

The square root of 2656456511 is about 51540.8237322610. The cubic root of 2656456511 is about 1384.9504534661.

The spelling of 2656456511 in words is "two billion, six hundred fifty-six million, four hundred fifty-six thousand, five hundred eleven".