11551543451399 has 32 divisors (see below), whose sum is σ = 13729456917120. Its totient is φ = 9509188534272.

The previous prime is 11551543451377. The next prime is 11551543451419. The reversal of 11551543451399 is 99315434515511.

It is a de Polignac number, because none of the positive numbers 2^k-11551543451399 is a prime.

It is a super-2 number, since 2×11551543451399² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551543451309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 473936177 + ... + 473960549.

It is an arithmetic number, because the mean of its divisors is an integer number (429045528660).

Almost surely, 2^{11551543451399} is an apocalyptic number.

11551543451399 is a deficient number, since it is larger than the sum of its proper divisors (2177913465721).

11551543451399 is a wasteful number, since it uses less digits than its factorization.

11551543451399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36699.

The product of its digits is 7290000, while the sum is 56.

The spelling of 11551543451399 in words is "eleven trillion, five hundred fifty-one billion, five hundred forty-three million, four hundred fifty-one thousand, three hundred ninety-nine".