123871718053 has 2 divisors, whose sum is σ = 123871718054. Its totient is φ = 123871718052.

The previous prime is 123871718051. The next prime is 123871718099. The reversal of 123871718053 is 350817178321.

It is an a-pointer prime, because the next prime (123871718099) can be obtained adding 123871718053 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119396509444 + 4475208609 = 345538^2 + 66897^2 .

It is a cyclic number.

It is not a de Polignac number, because 123871718053 - 2¹ = 123871718051 is a prime.

It is a super-2 number, since 2×123871718053² (a number of 23 digits) contains 22 as substring.

Together with 123871718051, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 123871717994 and 123871718012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123871718051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61935859026 + 61935859027.

It is an arithmetic number, because the mean of its divisors is an integer number (61935859027).

Almost surely, 2^123871718053 is an apocalyptic number.

It is an amenable number.

123871718053 is a deficient number, since it is larger than the sum of its proper divisors (1).

123871718053 is an equidigital number, since it uses as much as digits as its factorization.

123871718053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 123871718053 in words is "one hundred twenty-three billion, eight hundred seventy-one million, seven hundred eighteen thousand, fifty-three".