400840550104 has 8 divisors (see below), whose sum is σ = 751576031460. Its totient is φ = 200420275048.

The previous prime is 400840550093. The next prime is 400840550107. The reversal of 400840550104 is 401055048004.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400840550107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25052534374 + ... + 25052534389.

Almost surely, 2^400840550104 is an apocalyptic number.

It is an amenable number.

400840550104 is a deficient number, since it is larger than the sum of its proper divisors (350735481356).

400840550104 is a wasteful number, since it uses less digits than its factorization.

400840550104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50105068769 (or 50105068765 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 400840550104 its reverse (401055048004), we get a palindrome (801895598108).

The spelling of 400840550104 in words is "four hundred billion, eight hundred forty million, five hundred fifty thousand, one hundred four".