12151100545 has 4 divisors (see below), whose sum is σ = 14581320660. Its totient is φ = 9720880432.

The previous prime is 12151100501. The next prime is 12151100561. The reversal of 12151100545 is 54500115121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5003581696 + 7147518849 = 70736^2 + 84543^2 .

It is a cyclic number.

It is not a de Polignac number, because 12151100545 - 2¹³ = 12151092353 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1215110050 + ... + 1215110059.

It is an arithmetic number, because the mean of its divisors is an integer number (3645330165).

Almost surely, 2^12151100545 is an apocalyptic number.

It is an amenable number.

12151100545 is a deficient number, since it is larger than the sum of its proper divisors (2430220115).

12151100545 is an equidigital number, since it uses as much as digits as its factorization.

12151100545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430220114.

The product of its (nonzero) digits is 1000, while the sum is 25.

Adding to 12151100545 its reverse (54500115121), we get a palindrome (66651215666).

The spelling of 12151100545 in words is "twelve billion, one hundred fifty-one million, one hundred thousand, five hundred forty-five".