12405745412 has 12 divisors (see below), whose sum is σ = 21710846556. Its totient is φ = 6202646400.

The previous prime is 12405745409. The next prime is 12405745453. The reversal of 12405745412 is 21454750421.

It can be written as a sum of positive squares in 2 ways, for example, as 1434439876 + 10971305536 = 37874^2 + 104744^2 .

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, 153128 + ... + 219680.

It is an arithmetic number, because the mean of its divisors is an integer number (1809237213).

Almost surely, 2^12405745412 is an apocalyptic number.

It is an amenable number.

12405745412 is a deficient number, since it is larger than the sum of its proper divisors (9305101144).

12405745412 is a wasteful number, since it uses less digits than its factorization.

12405745412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113158 (or 113156 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The spelling of 12405745412 in words is "twelve billion, four hundred five million, seven hundred forty-five thousand, four hundred twelve".