135987533226 has 24 divisors (see below), whose sum is σ = 294646574820. Its totient is φ = 45328113216.

The previous prime is 135987533219. The next prime is 135987533249. The reversal of 135987533226 is 622335789531.

135987533226 is a `hidden beast` number, since 1 + 3 + 5 + 9 + 87 + 533 + 2 + 26 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 135018767601 + 968765625 = 367449^2 + 31125^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1224216 + ... + 1330668.

Almost surely, 2^135987533226 is an apocalyptic number.

135987533226 is an abundant number, since it is smaller than the sum of its proper divisors (158659041594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135987533226 is a wasteful number, since it uses less digits than its factorization.

135987533226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177430 (or 177427 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 54.

The spelling of 135987533226 in words is "one hundred thirty-five billion, nine hundred eighty-seven million, five hundred thirty-three thousand, two hundred twenty-six".