126817155423 has 12 divisors (see below), whose sum is σ = 209348955088. Its totient is φ = 72466945920.

The previous prime is 126817155359. The next prime is 126817155463. The reversal of 126817155423 is 324551718621.

126817155423 is a `hidden beast` number, since 1 + 2 + 6 + 8 + 1 + 71 + 554 + 23 = 666.

It is not a de Polignac number, because 126817155423 - 2⁶ = 126817155359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126817155463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1006485298 + ... + 1006485423.

Almost surely, 2^126817155423 is an apocalyptic number.

126817155423 is a deficient number, since it is larger than the sum of its proper divisors (82531799665).

126817155423 is a wasteful number, since it uses less digits than its factorization.

126817155423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012970734 (or 2012970731 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The spelling of 126817155423 in words is "one hundred twenty-six billion, eight hundred seventeen million, one hundred fifty-five thousand, four hundred twenty-three".