12155331527 has 8 divisors (see below), whose sum is σ = 12689846400. Its totient is φ = 11628507744.

The previous prime is 12155331523. The next prime is 12155331557. The reversal of 12155331527 is 72513355121.

12155331527 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12155331527 - 2² = 12155331523 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 (12155331523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919543 + ... + 1925864.

It is an arithmetic number, because the mean of its divisors is an integer number (1586230800).

Almost surely, 2^12155331527 is an apocalyptic number.

12155331527 is a deficient number, since it is larger than the sum of its proper divisors (534514873).

12155331527 is a wasteful number, since it uses less digits than its factorization.

12155331527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3845545.

The product of its digits is 31500, while the sum is 35.

Adding to 12155331527 its reverse (72513355121), we get a palindrome (84668686648).

The spelling of 12155331527 in words is "twelve billion, one hundred fifty-five million, three hundred thirty-one thousand, five hundred twenty-seven".