11551531143641 has 4 divisors (see below), whose sum is σ = 11579100430800. Its totient is φ = 11523961856484.

The previous prime is 11551531143623. The next prime is 11551531143689. The reversal of 11551531143641 is 14634113515511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11551531143641 - 2¹⁸ = 11551530881497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11551531140641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13784642951 + ... + 13784643788.

It is an arithmetic number, because the mean of its divisors is an integer number (2894775107700).

Almost surely, 2^{11551531143641} is an apocalyptic number.

It is an amenable number.

11551531143641 is a deficient number, since it is larger than the sum of its proper divisors (27569287159).

11551531143641 is an equidigital number, since it uses as much as digits as its factorization.

11551531143641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27569287158.

The product of its digits is 108000, while the sum is 41.

The spelling of 11551531143641 in words is "eleven trillion, five hundred fifty-one billion, five hundred thirty-one million, one hundred forty-three thousand, six hundred forty-one".