12154364441 has 4 divisors (see below), whose sum is σ = 12157500084. Its totient is φ = 12151228800.

The previous prime is 12154364423. The next prime is 12154364449. The reversal of 12154364441 is 14446345121.

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 7038538816 + 5115825625 = 83896^2 + 71525^2 .

It is a cyclic number.

It is not a de Polignac number, because 12154364441 - 2¹⁸ = 12154102297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12154364449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1562000 + ... + 1569761.

It is an arithmetic number, because the mean of its divisors is an integer number (3039375021).

Almost surely, 2^12154364441 is an apocalyptic number.

It is an amenable number.

12154364441 is a deficient number, since it is larger than the sum of its proper divisors (3135643).

12154364441 is an equidigital number, since it uses as much as digits as its factorization.

12154364441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135642.

The product of its digits is 46080, while the sum is 35.

The spelling of 12154364441 in words is "twelve billion, one hundred fifty-four million, three hundred sixty-four thousand, four hundred forty-one".