400035420064 has 24 divisors (see below), whose sum is σ = 900079695648. Its totient is φ = 171443751360.

The previous prime is 400035420023. The next prime is 400035420101. The reversal of 400035420064 is 460024530004.

It is a Harshad number since it is a multiple of its sum of digits (28).

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 3 ways as a sum of consecutive naturals, for example, 892935982 + ... + 892936429.

It is an arithmetic number, because the mean of its divisors is an integer number (37503320652).

Almost surely, 2^400035420064 is an apocalyptic number.

It is an amenable number.

400035420064 is an abundant number, since it is smaller than the sum of its proper divisors (500044275584).

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

400035420064 is a wasteful number, since it uses less digits than its factorization.

400035420064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785872428 (or 1785872420 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 400035420064 its reverse (460024530004), we get a palindrome (860059950068).

The spelling of 400035420064 in words is "four hundred billion, thirty-five million, four hundred twenty thousand, sixty-four".