115533454551 has 4 divisors (see below), whose sum is σ = 154044606072. Its totient is φ = 77022303032.

The previous prime is 115533454541. The next prime is 115533454559. The reversal of 115533454551 is 155454335511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115533454551 - 2¹³ = 115533446359 is a prime.

It is a super-2 number, since 2×115533454551² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115533454559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19255575756 + ... + 19255575761.

It is an arithmetic number, because the mean of its divisors is an integer number (38511151518).

Almost surely, 2^115533454551 is an apocalyptic number.

115533454551 is a deficient number, since it is larger than the sum of its proper divisors (38511151521).

115533454551 is an equidigital number, since it uses as much as digits as its factorization.

115533454551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38511151520.

The product of its digits is 450000, while the sum is 42.

The spelling of 115533454551 in words is "one hundred fifteen billion, five hundred thirty-three million, four hundred fifty-four thousand, five hundred fifty-one".