11431441551 has 8 divisors (see below), whose sum is σ = 15244762624. Its totient is φ = 7619540760.

The previous prime is 11431441543. The next prime is 11431441559. The reversal of 11431441551 is 15514413411.

It is an interprime number because it is at equal distance from previous prime (11431441543) and next prime (11431441559).

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

It is not a de Polignac number, because 11431441551 - 2³ = 11431441543 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 (11431441559) 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, 336145 + ... + 368586.

It is an arithmetic number, because the mean of its divisors is an integer number (1905595328).

Almost surely, 2^11431441551 is an apocalyptic number.

11431441551 is a deficient number, since it is larger than the sum of its proper divisors (3813321073).

11431441551 is an equidigital number, since it uses as much as digits as its factorization.

11431441551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710141.

The product of its digits is 4800, while the sum is 30.

Adding to 11431441551 its reverse (15514413411), we get a palindrome (26945854962).

The spelling of 11431441551 in words is "eleven billion, four hundred thirty-one million, four hundred forty-one thousand, five hundred fifty-one".