123812146511 has 2 divisors, whose sum is σ = 123812146512. Its totient is φ = 123812146510.

The previous prime is 123812146439. The next prime is 123812146543. The reversal of 123812146511 is 115641218321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123812146511 is a prime.

It is a super-2 number, since 2×123812146511² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123812149511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61906073255 + 61906073256.

It is an arithmetic number, because the mean of its divisors is an integer number (61906073256).

Almost surely, 2^123812146511 is an apocalyptic number.

123812146511 is a deficient number, since it is larger than the sum of its proper divisors (1).

123812146511 is an equidigital number, since it uses as much as digits as its factorization.

123812146511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 35.

The spelling of 123812146511 in words is "one hundred twenty-three billion, eight hundred twelve million, one hundred forty-six thousand, five hundred eleven".