123005100551 has 2 divisors, whose sum is σ = 123005100552. Its totient is φ = 123005100550.

The previous prime is 123005100497. The next prime is 123005100587. The reversal of 123005100551 is 155001500321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123005100551 - 2⁶ = 123005100487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123055100551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61502550275 + 61502550276.

It is an arithmetic number, because the mean of its divisors is an integer number (61502550276).

Almost surely, 2^123005100551 is an apocalyptic number.

123005100551 is a deficient number, since it is larger than the sum of its proper divisors (1).

123005100551 is an equidigital number, since it uses as much as digits as its factorization.

123005100551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 123005100551 its reverse (155001500321), we get a palindrome (278006600872).

The spelling of 123005100551 in words is "one hundred twenty-three billion, five million, one hundred thousand, five hundred fifty-one".