12535432155 has 16 divisors (see below), whose sum is σ = 22285212960. Its totient is φ = 6685563744.

The previous prime is 12535432121. The next prime is 12535432163. The reversal of 12535432155 is 55123453521.

12535432155 is a `hidden beast` number, since 12 + 53 + 543 + 2 + 1 + 55 = 666.

It is not a de Polignac number, because 12535432155 - 2²⁰ = 12534383579 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46427392 + ... + 46427661.

It is an arithmetic number, because the mean of its divisors is an integer number (1392825810).

Almost surely, 2^12535432155 is an apocalyptic number.

12535432155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12535432155 is a deficient number, since it is larger than the sum of its proper divisors (9749780805).

12535432155 is an equidigital number, since it uses as much as digits as its factorization.

12535432155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92855067 (or 92855061 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

Adding to 12535432155 its reverse (55123453521), we get a palindrome (67658885676).

The spelling of 12535432155 in words is "twelve billion, five hundred thirty-five million, four hundred thirty-two thousand, one hundred fifty-five".