407656656613 has 2 divisors, whose sum is σ = 407656656614. Its totient is φ = 407656656612.

The previous prime is 407656656611. The next prime is 407656656707. The reversal of 407656656613 is 316656656704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271630677124 + 136025979489 = 521182^2 + 368817^2 .

It is a cyclic number.

It is not a de Polignac number, because 407656656613 - 2¹ = 407656656611 is a prime.

Together with 407656656611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (407656656611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203828328306 + 203828328307.

It is an arithmetic number, because the mean of its divisors is an integer number (203828328307).

Almost surely, 2^407656656613 is an apocalyptic number.

It is an amenable number.

407656656613 is a deficient number, since it is larger than the sum of its proper divisors (1).

407656656613 is an equidigital number, since it uses as much as digits as its factorization.

407656656613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16329600, while the sum is 55.

Subtracting from 407656656613 its reverse (316656656704), we obtain a palindrome (90999999909).

The spelling of 407656656613 in words is "four hundred seven billion, six hundred fifty-six million, six hundred fifty-six thousand, six hundred thirteen".