115551722133 has 24 divisors (see below), whose sum is σ = 169622593920. Its totient is φ = 75788556480.

The previous prime is 115551722131. The next prime is 115551722149. The reversal of 115551722133 is 331227155511.

115551722133 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 517 + 2 + 2 + 133 = 666.

It is not a de Polignac number, because 115551722133 - 2¹ = 115551722131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115551722131) 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, 89391 + ... + 488972.

It is an arithmetic number, because the mean of its divisors is an integer number (7067608080).

Almost surely, 2^115551722133 is an apocalyptic number.

It is an amenable number.

115551722133 is a deficient number, since it is larger than the sum of its proper divisors (54070871787).

115551722133 is a wasteful number, since it uses less digits than its factorization.

115551722133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578729 (or 578726 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

Adding to 115551722133 its reverse (331227155511), we get a palindrome (446778877644).

The spelling of 115551722133 in words is "one hundred fifteen billion, five hundred fifty-one million, seven hundred twenty-two thousand, one hundred thirty-three".