123500754961 has 2 divisors, whose sum is σ = 123500754962. Its totient is φ = 123500754960.

The previous prime is 123500754959. The next prime is 123500755019. The reversal of 123500754961 is 169457005321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72805530625 + 50695224336 = 269825^2 + 225156^2 .

It is a cyclic number.

It is not a de Polignac number, because 123500754961 - 2¹ = 123500754959 is a prime.

It is a super-2 number, since 2×123500754961² (a number of 23 digits) contains 22 as substring.

Together with 123500754959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123500754911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61750377480 + 61750377481.

It is an arithmetic number, because the mean of its divisors is an integer number (61750377481).

Almost surely, 2^123500754961 is an apocalyptic number.

It is an amenable number.

123500754961 is a deficient number, since it is larger than the sum of its proper divisors (1).

123500754961 is an equidigital number, since it uses as much as digits as its factorization.

123500754961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 123500754961 in words is "one hundred twenty-three billion, five hundred million, seven hundred fifty-four thousand, nine hundred sixty-one".