406256381236 has 24 divisors (see below), whose sum is σ = 745913369600. Its totient is φ = 193353112800.

The previous prime is 406256381207. The next prime is 406256381263. The reversal of 406256381236 is 632183652604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26847036 + ... + 26862163.

Almost surely, 2^406256381236 is an apocalyptic number.

It is an amenable number.

406256381236 is a deficient number, since it is larger than the sum of its proper divisors (339656988364).

406256381236 is a wasteful number, since it uses less digits than its factorization.

406256381236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53709295 (or 53709293 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 406256381236 in words is "four hundred six billion, two hundred fifty-six million, three hundred eighty-one thousand, two hundred thirty-six".