400454300324240 has 40 divisors (see below), whose sum is σ = 938387399838720. Its totient is φ = 158920446738816.

The previous prime is 400454300324161. The next prime is 400454300324269. The reversal of 400454300324240 is 42423003454004.

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

It is a self number, because there is not a number n which added to its sum of digits gives 400454300324240.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19707386510 + ... + 19707406829.

It is an arithmetic number, because the mean of its divisors is an integer number (23459684995968).

Almost surely, 2^{400454300324240} is an apocalyptic number.

400454300324240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400454300324240 is an abundant number, since it is smaller than the sum of its proper divisors (537933099514480).

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

400454300324240 is a wasteful number, since it uses less digits than its factorization.

400454300324240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39414793479 (or 39414793473 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 35.

Adding to 400454300324240 its reverse (42423003454004), we get a palindrome (442877303778244).

The spelling of 400454300324240 in words is "four hundred trillion, four hundred fifty-four billion, three hundred million, three hundred twenty-four thousand, two hundred forty".