136775423738 has 48 divisors (see below), whose sum is σ = 219094719480. Its totient is φ = 63960551424.

The previous prime is 136775423723. The next prime is 136775423783. The reversal of 136775423738 is 837324577631.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 33228550369 + 103546873369 = 182287^2 + 321787^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18496970 + ... + 18504362.

Almost surely, 2^136775423738 is an apocalyptic number.

136775423738 is a deficient number, since it is larger than the sum of its proper divisors (82319295742).

136775423738 is a wasteful number, since it uses less digits than its factorization.

136775423738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7731 (or 7694 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 56.

The spelling of 136775423738 in words is "one hundred thirty-six billion, seven hundred seventy-five million, four hundred twenty-three thousand, seven hundred thirty-eight".