123344657647 has 2 divisors, whose sum is σ = 123344657648. Its totient is φ = 123344657646.

The previous prime is 123344657509. The next prime is 123344657651. The reversal of 123344657647 is 746756443321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123344657647 - 2³⁵ = 88984919279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123344657594 and 123344657603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123344657687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61672328823 + 61672328824.

It is an arithmetic number, because the mean of its divisors is an integer number (61672328824).

Almost surely, 2^123344657647 is an apocalyptic number.

123344657647 is a deficient number, since it is larger than the sum of its proper divisors (1).

123344657647 is an equidigital number, since it uses as much as digits as its factorization.

123344657647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 52.

The spelling of 123344657647 in words is "one hundred twenty-three billion, three hundred forty-four million, six hundred fifty-seven thousand, six hundred forty-seven".