11551543451455 has 8 divisors (see below), whose sum is σ = 15842116733472. Its totient is φ = 7921058366688.

The previous prime is 11551543451447. The next prime is 11551543451501. The reversal of 11551543451455 is 55415434515511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11551543451455 - 2³ = 11551543451447 is a prime.

It is a super-2 number, since 2×11551543451455² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11551543451399 and 11551543451408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165022049272 + ... + 165022049341.

It is an arithmetic number, because the mean of its divisors is an integer number (1980264591684).

Almost surely, 2^{11551543451455} is an apocalyptic number.

11551543451455 is a deficient number, since it is larger than the sum of its proper divisors (4290573282017).

11551543451455 is an equidigital number, since it uses as much as digits as its factorization.

11551543451455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330044098625.

The product of its digits is 3000000, while the sum is 49.

Adding to 11551543451455 its reverse (55415434515511), we get a palindrome (66966977966966).

The spelling of 11551543451455 in words is "eleven trillion, five hundred fifty-one billion, five hundred forty-three million, four hundred fifty-one thousand, four hundred fifty-five".