2656946513 has 18 divisors (see below), whose sum is σ = 2910311586. Its totient is φ = 2424344832.

The previous prime is 2656946477. The next prime is 2656946521. The reversal of 2656946513 is 3156496562.

It can be written as a sum of positive squares in 9 ways, for example, as 2035092544 + 621853969 = 45112^2 + 24937^2 .

It is not a de Polignac number, because 2656946513 - 2¹⁶ = 2656880977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2656946113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7122995 + ... + 7123367.

It is an arithmetic number, because the mean of its divisors is an integer number (161683977).

Almost surely, 2^2656946513 is an apocalyptic number.

It is an amenable number.

2656946513 is a deficient number, since it is larger than the sum of its proper divisors (253365073).

2656946513 is an equidigital number, since it uses as much as digits as its factorization.

2656946513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885 (or 499 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 47.

The square root of 2656946513 is about 51545.5770459503. The cubic root of 2656946513 is about 1385.0356028330.

The spelling of 2656946513 in words is "two billion, six hundred fifty-six million, nine hundred forty-six thousand, five hundred thirteen".