406932632640 has 168 divisors, whose sum is σ = 1429459574400. Its totient is φ = 106206495744.

The previous prime is 406932632633. The next prime is 406932632707. The reversal of 406932632640 is 46236239604.

406932632640 is a `hidden beast` number, since 4 + 0 + 6 + 9 + 3 + 2 + 632 + 6 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1367790 + ... + 1638509.

Almost surely, 2^406932632640 is an apocalyptic number.

406932632640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406932632640 is an abundant number, since it is smaller than the sum of its proper divisors (1022526941760).

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

406932632640 is a wasteful number, since it uses less digits than its factorization.

406932632640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006369 (or 3006356 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 45.

The spelling of 406932632640 in words is "four hundred six billion, nine hundred thirty-two million, six hundred thirty-two thousand, six hundred forty".