123654545137 has 2 divisors, whose sum is σ = 123654545138. Its totient is φ = 123654545136.

The previous prime is 123654545123. The next prime is 123654545239. The reversal of 123654545137 is 731545456321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84876664896 + 38777880241 = 291336^2 + 196921^2 .

It is a cyclic number.

It is not a de Polignac number, because 123654545137 - 2¹⁵ = 123654512369 is a prime.

It is not a weakly prime, because it can be changed into another prime (123654545117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61827272568 + 61827272569.

It is an arithmetic number, because the mean of its divisors is an integer number (61827272569).

Almost surely, 2^123654545137 is an apocalyptic number.

It is an amenable number.

123654545137 is a deficient number, since it is larger than the sum of its proper divisors (1).

123654545137 is an equidigital number, since it uses as much as digits as its factorization.

123654545137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512000, while the sum is 46.

The spelling of 123654545137 in words is "one hundred twenty-three billion, six hundred fifty-four million, five hundred forty-five thousand, one hundred thirty-seven".