12045404457 has 10 divisors (see below), whose sum is σ = 17993752458. Its totient is φ = 8030269584.

The previous prime is 12045404443. The next prime is 12045404461. The reversal of 12045404457 is 75440454021.

12045404457 is a `hidden beast` number, since 1 + 20 + 4 + 540 + 44 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11920054041 + 125350416 = 109179^2 + 11196^2 .

It is not a de Polignac number, because 12045404457 - 2¹⁸ = 12045142313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12045408457) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 74354268 + ... + 74354429.

Almost surely, 2^12045404457 is an apocalyptic number.

It is an amenable number.

12045404457 is a deficient number, since it is larger than the sum of its proper divisors (5948348001).

12045404457 is an equidigital number, since it uses as much as digits as its factorization.

12045404457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148708709 (or 148708700 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 36.

Adding to 12045404457 its reverse (75440454021), we get a palindrome (87485858478).

The spelling of 12045404457 in words is "twelve billion, forty-five million, four hundred four thousand, four hundred fifty-seven".