123456787654313 has 2 divisors, whose sum is σ = 123456787654314. Its totient is φ = 123456787654312.

The previous prime is 123456787654289. The next prime is 123456787654391. The reversal of 123456787654313 is 313456787654321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107989777426969 + 15467010227344 = 10391813^2 + 3932812^2 .

It is a cyclic number.

It is not a de Polignac number, because 123456787654313 - 2⁴⁶ = 53088043476649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123456787654313.

It is not a weakly prime, because it can be changed into another prime (123456787653313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61728393827156 + 61728393827157.

It is an arithmetic number, because the mean of its divisors is an integer number (61728393827157).

Almost surely, 2^{123456787654313} is an apocalyptic number.

It is an amenable number.

123456787654313 is a deficient number, since it is larger than the sum of its proper divisors (1).

123456787654313 is an equidigital number, since it uses as much as digits as its factorization.

123456787654313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 304819200, while the sum is 65.

It can be divided in two parts, 12345678 and 7654313, that added together give a palindrome (19999991).

The spelling of 123456787654313 in words is "one hundred twenty-three trillion, four hundred fifty-six billion, seven hundred eighty-seven million, six hundred fifty-four thousand, three hundred thirteen".