406868757440 has 56 divisors (see below), whose sum is σ = 1025847785232. Its totient is φ = 153174118400.

The previous prime is 406868757367. The next prime is 406868757443. The reversal of 406868757440 is 44757868604.

It is a self number, because there is not a number n which added to its sum of digits gives 406868757440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406868757443) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 37390586 + ... + 37401465.

Almost surely, 2^406868757440 is an apocalyptic number.

406868757440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406868757440 is an abundant number, since it is smaller than the sum of its proper divisors (618979027792).

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

406868757440 is a wasteful number, since it uses less digits than its factorization.

406868757440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74792085 (or 74792075 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 59.

The spelling of 406868757440 in words is "four hundred six billion, eight hundred sixty-eight million, seven hundred fifty-seven thousand, four hundred forty".