400040001145552 has 80 divisors (see below), whose sum is σ = 800748230833152. Its totient is φ = 193484334320640.

The previous prime is 400040001145549. The next prime is 400040001145571. The reversal of 400040001145552 is 255541100040004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38893153 + ... + 48091135.

Almost surely, 2^{400040001145552} is an apocalyptic number.

It is an amenable number.

400040001145552 is an abundant number, since it is smaller than the sum of its proper divisors (400708229687600).

400040001145552 is a wasteful number, since it uses less digits than its factorization.

400040001145552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9198596 (or 9198590 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 400040001145552 its reverse (255541100040004), we get a palindrome (655581101185556).

The spelling of 400040001145552 in words is "four hundred trillion, forty billion, one million, one hundred forty-five thousand, five hundred fifty-two".