400568338500 has 384 divisors, whose sum is σ = 1291075269120. Its totient is φ = 95698944000.

The previous prime is 400568338441. The next prime is 400568338501. The reversal of 400568338500 is 5833865004.

It is not an unprimeable number, because it can be changed into a prime (400568338501) 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 127 ways as a sum of consecutive naturals, for example, 564976146 + ... + 564976854.

It is an arithmetic number, because the mean of its divisors is an integer number (3362175180).

Almost surely, 2^400568338500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400568338500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645537634560).

400568338500 is an abundant number, since it is smaller than the sum of its proper divisors (890506930620).

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

400568338500 is a wasteful number, since it uses less digits than its factorization.

400568338500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 400568338500 in words is "four hundred billion, five hundred sixty-eight million, three hundred thirty-eight thousand, five hundred".