12151224545 has 8 divisors (see below), whose sum is σ = 14588584296. Its totient is φ = 9716236416.

The previous prime is 12151224539. The next prime is 12151224559. The reversal of 12151224545 is 54542215121.

It can be written as a sum of positive squares in 4 ways, for example, as 5280638224 + 6870586321 = 72668^2 + 82889^2 .

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 12151224545 - 2¹⁰ = 12151223521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581612 + ... + 602141.

It is an arithmetic number, because the mean of its divisors is an integer number (1823573037).

Almost surely, 2^12151224545 is an apocalyptic number.

It is an amenable number.

12151224545 is a deficient number, since it is larger than the sum of its proper divisors (2437359751).

12151224545 is a wasteful number, since it uses less digits than its factorization.

12151224545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185811.

The product of its digits is 16000, while the sum is 32.

Adding to 12151224545 its reverse (54542215121), we get a palindrome (66693439666).

The spelling of 12151224545 in words is "twelve billion, one hundred fifty-one million, two hundred twenty-four thousand, five hundred forty-five".