12011411557 has 8 divisors (see below), whose sum is σ = 12735095616. Its totient is φ = 11289630912.

The previous prime is 12011411539. The next prime is 12011411563. The reversal of 12011411557 is 75511411021.

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

It is not a de Polignac number, because 12011411557 - 2¹⁹ = 12010887269 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 (12011411057) 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, 462843 + ... + 488104.

It is an arithmetic number, because the mean of its divisors is an integer number (1591886952).

Almost surely, 2^12011411557 is an apocalyptic number.

12011411557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12011411557 is a deficient number, since it is larger than the sum of its proper divisors (723684059).

12011411557 is an equidigital number, since it uses as much as digits as its factorization.

12011411557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951707.

The product of its (nonzero) digits is 1400, while the sum is 28.

Adding to 12011411557 its reverse (75511411021), we get a palindrome (87522822578).

The spelling of 12011411557 in words is "twelve billion, eleven million, four hundred eleven thousand, five hundred fifty-seven".