11551542663541 has 8 divisors (see below), whose sum is σ = 11554436791424. Its totient is φ = 11548648910880.

The previous prime is 11551542663499. The next prime is 11551542663571. The reversal of 11551542663541 is 14536624515511.

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 11551542663541 - 2⁷ = 11551542663413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551542663571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67431406 + ... + 67602496.

It is an arithmetic number, because the mean of its divisors is an integer number (1444304598928).

Almost surely, 2^{11551542663541} is an apocalyptic number.

It is an amenable number.

11551542663541 is a deficient number, since it is larger than the sum of its proper divisors (2894127883).

11551542663541 is an equidigital number, since it uses as much as digits as its factorization.

11551542663541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187611.

The product of its digits is 2160000, while the sum is 49.

The spelling of 11551542663541 in words is "eleven trillion, five hundred fifty-one billion, five hundred forty-two million, six hundred sixty-three thousand, five hundred forty-one".