12401603406 has 24 divisors (see below), whose sum is σ = 26982577440. Its totient is φ = 4116569856.

The previous prime is 12401603399. The next prime is 12401603407. The reversal of 12401603406 is 60430610421.

12401603406 is a `hidden beast` number, since 1 + 240 + 16 + 0 + 3 + 406 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12401603406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12401603407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1437075 + ... + 1445678.

It is an arithmetic number, because the mean of its divisors is an integer number (1124274060).

Almost surely, 2^12401603406 is an apocalyptic number.

12401603406 is an abundant number, since it is smaller than the sum of its proper divisors (14580974034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12401603406 is a wasteful number, since it uses less digits than its factorization.

12401603406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883000 (or 2882997 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 12401603406 in words is "twelve billion, four hundred one million, six hundred three thousand, four hundred six".