12155442432352 has 12 divisors (see below), whose sum is σ = 23931027288756. Its totient is φ = 6077721216160.

The previous prime is 12155442432283. The next prime is 12155442432383. The reversal of 12155442432352 is 25323424455121.

It is a junction number, because it is equal to n+sod(n) for n = 12155442432299 and 12155442432308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189928787974 + ... + 189928788037.

It is an arithmetic number, because the mean of its divisors is an integer number (1994252274063).

Almost surely, 2^{12155442432352} is an apocalyptic number.

It is an amenable number.

12155442432352 is a deficient number, since it is larger than the sum of its proper divisors (11775584856404).

12155442432352 is an equidigital number, since it uses as much as digits as its factorization.

12155442432352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379857576021 (or 379857576013 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 43.

Adding to 12155442432352 its reverse (25323424455121), we get a palindrome (37478866887473).

The spelling of 12155442432352 in words is "twelve trillion, one hundred fifty-five billion, four hundred forty-two million, four hundred thirty-two thousand, three hundred fifty-two".