400004343420024 has 128 divisors (see below), whose sum is σ = 1143247142499840. Its totient is φ = 114249203108352.

The previous prime is 400004343419987. The next prime is 400004343420083. The reversal of 400004343420024 is 420024343400004.

It is a junction number, because it is equal to n+sod(n) for n = 400004343419973 and 400004343420000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6849008407 + ... + 6849066809.

It is an arithmetic number, because the mean of its divisors is an integer number (8931618300780).

Almost surely, 2^{400004343420024} is an apocalyptic number.

It is an amenable number.

400004343420024 is an abundant number, since it is smaller than the sum of its proper divisors (743242799079816).

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

400004343420024 is a wasteful number, since it uses less digits than its factorization.

400004343420024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71189 (or 71185 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 400004343420024 its reverse (420024343400004), we get a palindrome (820028686820028).

The spelling of 400004343420024 in words is "four hundred trillion, four billion, three hundred forty-three million, four hundred twenty thousand, twenty-four".