123401518063 has 2 divisors, whose sum is σ = 123401518064. Its totient is φ = 123401518062.

The previous prime is 123401518033. The next prime is 123401518081. The reversal of 123401518063 is 360815104321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123401518063 - 2¹⁷ = 123401386991 is a prime.

It is a super-3 number, since 3×123401518063³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123401518033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61700759031 + 61700759032.

It is an arithmetic number, because the mean of its divisors is an integer number (61700759032).

Almost surely, 2^123401518063 is an apocalyptic number.

123401518063 is a deficient number, since it is larger than the sum of its proper divisors (1).

123401518063 is an equidigital number, since it uses as much as digits as its factorization.

123401518063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 123401518063 in words is "one hundred twenty-three billion, four hundred one million, five hundred eighteen thousand, sixty-three".