400412113040 has 40 divisors (see below), whose sum is σ = 942742458240. Its totient is φ = 158137439616.

The previous prime is 400412113027. The next prime is 400412113069. The reversal of 400412113040 is 40311214004.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31671854 + ... + 31684493.

It is an arithmetic number, because the mean of its divisors is an integer number (23568561456).

Almost surely, 2^400412113040 is an apocalyptic number.

400412113040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400412113040 is an abundant number, since it is smaller than the sum of its proper divisors (542330345200).

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

400412113040 is a wasteful number, since it uses less digits than its factorization.

400412113040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63356439 (or 63356433 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 400412113040 its reverse (40311214004), we get a palindrome (440723327044).

The spelling of 400412113040 in words is "four hundred billion, four hundred twelve million, one hundred thirteen thousand, forty".