400827810744 has 64 divisors (see below), whose sum is σ = 1128662829600. Its totient is φ = 131779001088.

The previous prime is 400827810743. The next prime is 400827810751. The reversal of 400827810744 is 447018728004.

It is a self number, because there is not a number n which added to its sum of digits gives 400827810744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400827810743) 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 15 ways as a sum of consecutive naturals, for example, 12694399 + ... + 12725934.

Almost surely, 2^400827810744 is an apocalyptic number.

It is an amenable number.

400827810744 is an abundant number, since it is smaller than the sum of its proper divisors (727835018856).

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

400827810744 is a wasteful number, since it uses less digits than its factorization.

400827810744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25420421 (or 25420411 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 45.

The spelling of 400827810744 in words is "four hundred billion, eight hundred twenty-seven million, eight hundred ten thousand, seven hundred forty-four".