406263413640 has 128 divisors (see below), whose sum is σ = 1453464207360. Its totient is φ = 88822804224.

The previous prime is 406263413639. The next prime is 406263413719. The reversal of 406263413640 is 46314362604.

It is a super-2 number, since 2×406263413640² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10494744 + ... + 10533383.

It is an arithmetic number, because the mean of its divisors is an integer number (11355189120).

Almost surely, 2^406263413640 is an apocalyptic number.

406263413640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406263413640 is an abundant number, since it is smaller than the sum of its proper divisors (1047200793720).

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

406263413640 is a wasteful number, since it uses less digits than its factorization.

406263413640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21028171 (or 21028167 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 39.

The spelling of 406263413640 in words is "four hundred six billion, two hundred sixty-three million, four hundred thirteen thousand, six hundred forty".