124344455861 has 2 divisors, whose sum is σ = 124344455862. Its totient is φ = 124344455860.

The previous prime is 124344455843. The next prime is 124344455863. The reversal of 124344455861 is 168554443421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92298085636 + 32046370225 = 303806^2 + 179015^2 .

It is a cyclic number.

It is not a de Polignac number, because 124344455861 - 2²² = 124340261557 is a prime.

Together with 124344455863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124344455863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62172227930 + 62172227931.

It is an arithmetic number, because the mean of its divisors is an integer number (62172227931).

Almost surely, 2^124344455861 is an apocalyptic number.

It is an amenable number.

124344455861 is a deficient number, since it is larger than the sum of its proper divisors (1).

124344455861 is an equidigital number, since it uses as much as digits as its factorization.

124344455861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1843200, while the sum is 47.

The spelling of 124344455861 in words is "one hundred twenty-four billion, three hundred forty-four million, four hundred fifty-five thousand, eight hundred sixty-one".