11500256133 has 24 divisors (see below), whose sum is σ = 16790716800. Its totient is φ = 7584339744.

The previous prime is 11500256107. The next prime is 11500256161. The reversal of 11500256133 is 33165200511.

11500256133 is a `hidden beast` number, since 1 + 1 + 500 + 25 + 6 + 133 = 666.

It is not a de Polignac number, because 11500256133 - 2⁶ = 11500256069 is a prime.

It is a super-2 number, since 2×11500256133² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11500256097 and 11500256106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11500256633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 625648 + ... + 643766.

It is an arithmetic number, because the mean of its divisors is an integer number (699613200).

Almost surely, 2^11500256133 is an apocalyptic number.

It is an amenable number.

11500256133 is a deficient number, since it is larger than the sum of its proper divisors (5290460667).

11500256133 is a wasteful number, since it uses less digits than its factorization.

11500256133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18881 (or 18878 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 11500256133 its reverse (33165200511), we get a palindrome (44665456644).

The spelling of 11500256133 in words is "eleven billion, five hundred million, two hundred fifty-six thousand, one hundred thirty-three".