2656435457 has 6 divisors (see below), whose sum is σ = 2876495382. Its totient is φ = 2452094112.

The previous prime is 2656435451. The next prime is 2656435499. The reversal of 2656435457 is 7545346562.

It can be written as a sum of positive squares in 3 ways, for example, as 38987536 + 2617447921 = 6244^2 + 51161^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2656435457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2656435451) 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 5 ways as a sum of consecutive naturals, for example, 7859108 + ... + 7859445.

It is an arithmetic number, because the mean of its divisors is an integer number (479415897).

Almost surely, 2^2656435457 is an apocalyptic number.

It is an amenable number.

2656435457 is a deficient number, since it is larger than the sum of its proper divisors (220059925).

2656435457 is a wasteful number, since it uses less digits than its factorization.

2656435457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15718579 (or 15718566 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 47.

The square root of 2656435457 is about 51540.6194859938. The cubic root of 2656435457 is about 1384.9467946041.

The spelling of 2656435457 in words is "two billion, six hundred fifty-six million, four hundred thirty-five thousand, four hundred fifty-seven".