12400540448 has 24 divisors (see below), whose sum is σ = 24629620428. Its totient is φ = 6145398784.

The previous prime is 12400540403. The next prime is 12400540463. The reversal of 12400540448 is 84404500421.

It can be written as a sum of positive squares in 2 ways, for example, as 11965734544 + 434805904 = 109388^2 + 20852^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 1711061 + ... + 1718292.

Almost surely, 2^12400540448 is an apocalyptic number.

It is an amenable number.

12400540448 is a deficient number, since it is larger than the sum of its proper divisors (12229079980).

12400540448 is a wasteful number, since it uses less digits than its factorization.

12400540448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429476 (or 3429468 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 32.

The spelling of 12400540448 in words is "twelve billion, four hundred million, five hundred forty thousand, four hundred forty-eight".