12354103945 has 4 divisors (see below), whose sum is σ = 14824924740. Its totient is φ = 9883283152.

The previous prime is 12354103933. The next prime is 12354103963. The reversal of 12354103945 is 54930145321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54930145321 = 6073 ⋅9044977.

It can be written as a sum of positive squares in 2 ways, for example, as 5784515136 + 6569588809 = 76056^2 + 81053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12354103945 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, 1235410390 + ... + 1235410399.

It is an arithmetic number, because the mean of its divisors is an integer number (3706231185).

Almost surely, 2^12354103945 is an apocalyptic number.

It is an amenable number.

12354103945 is a deficient number, since it is larger than the sum of its proper divisors (2470820795).

12354103945 is an equidigital number, since it uses as much as digits as its factorization.

12354103945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470820794.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 12354103945 in words is "twelve billion, three hundred fifty-four million, one hundred three thousand, nine hundred forty-five".