11433135987 has 160 divisors (see below), whose sum is σ = 23230513152. Its totient is φ = 5427772416.

The previous prime is 11433135979. The next prime is 11433135997. The reversal of 11433135987 is 78953133411.

11433135987 is a `hidden beast` number, since 1 + 1 + 43 + 3 + 13 + 598 + 7 = 666.

It is not a de Polignac number, because 11433135987 - 2³ = 11433135979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11433135997) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 2880078 + ... + 2884044.

Almost surely, 2^11433135987 is an apocalyptic number.

11433135987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11433135987 is an abundant number, since it is smaller than the sum of its proper divisors (11797377165).

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

11433135987 is a wasteful number, since it uses less digits than its factorization.

11433135987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039 (or 4030 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The spelling of 11433135987 in words is "eleven billion, four hundred thirty-three million, one hundred thirty-five thousand, nine hundred eighty-seven".