400111350040 has 64 divisors (see below), whose sum is σ = 906471000000. Its totient is φ = 158939289600.

The previous prime is 400111349983. The next prime is 400111350043. The reversal of 400111350040 is 40053111004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400111350043) 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, 28072836 + ... + 28087084.

It is an arithmetic number, because the mean of its divisors is an integer number (14163609375).

Almost surely, 2^400111350040 is an apocalyptic number.

400111350040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400111350040 is an abundant number, since it is smaller than the sum of its proper divisors (506359649960).

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

400111350040 is a wasteful number, since it uses less digits than its factorization.

400111350040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19060 (or 19056 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 400111350040 its reverse (40053111004), we get a palindrome (440164461044).

The spelling of 400111350040 in words is "four hundred billion, one hundred eleven million, three hundred fifty thousand, forty".