123543607403 has 2 divisors, whose sum is σ = 123543607404. Its totient is φ = 123543607402.

The previous prime is 123543607361. The next prime is 123543607423. The reversal of 123543607403 is 304706345321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123543607403 - 2¹² = 123543603307 is a prime.

It is not a weakly prime, because it can be changed into another prime (123543607423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61771803701 + 61771803702.

It is an arithmetic number, because the mean of its divisors is an integer number (61771803702).

Almost surely, 2^123543607403 is an apocalyptic number.

123543607403 is a deficient number, since it is larger than the sum of its proper divisors (1).

123543607403 is an equidigital number, since it uses as much as digits as its factorization.

123543607403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 38.

The spelling of 123543607403 in words is "one hundred twenty-three billion, five hundred forty-three million, six hundred seven thousand, four hundred three".