12153452534 has 4 divisors (see below), whose sum is σ = 18230178804. Its totient is φ = 6076726266.

The previous prime is 12153452497. The next prime is 12153452561. The reversal of 12153452534 is 43525435121.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 12153452494 and 12153452503.

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, 3038363132 + ... + 3038363135.

It is an arithmetic number, because the mean of its divisors is an integer number (4557544701).

Almost surely, 2^12153452534 is an apocalyptic number.

12153452534 is a deficient number, since it is larger than the sum of its proper divisors (6076726270).

12153452534 is an equidigital number, since it uses as much as digits as its factorization.

12153452534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076726269.

The product of its digits is 72000, while the sum is 35.

Adding to 12153452534 its reverse (43525435121), we get a palindrome (55678887655).

The spelling of 12153452534 in words is "twelve billion, one hundred fifty-three million, four hundred fifty-two thousand, five hundred thirty-four".