123247953643 has 2 divisors, whose sum is σ = 123247953644. Its totient is φ = 123247953642.

The previous prime is 123247953623. The next prime is 123247953649. The reversal of 123247953643 is 346359742321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123247953643 - 2¹³ = 123247945451 is a prime.

It is not a weakly prime, because it can be changed into another prime (123247953649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61623976821 + 61623976822.

It is an arithmetic number, because the mean of its divisors is an integer number (61623976822).

Almost surely, 2^123247953643 is an apocalyptic number.

123247953643 is a deficient number, since it is larger than the sum of its proper divisors (1).

123247953643 is an equidigital number, since it uses as much as digits as its factorization.

123247953643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 49.

The spelling of 123247953643 in words is "one hundred twenty-three billion, two hundred forty-seven million, nine hundred fifty-three thousand, six hundred forty-three".