400004146605 has 64 divisors (see below), whose sum is σ = 763650478080. Its totient is φ = 174814058496.

The previous prime is 400004146603. The next prime is 400004146609. The reversal of 400004146605 is 506641400004.

It is not a de Polignac number, because 400004146605 - 2¹ = 400004146603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400004146601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4518094 + ... + 4605776.

It is an arithmetic number, because the mean of its divisors is an integer number (11932038720).

Almost surely, 2^400004146605 is an apocalyptic number.

It is an amenable number.

400004146605 is a deficient number, since it is larger than the sum of its proper divisors (363646331475).

400004146605 is a wasteful number, since it uses less digits than its factorization.

400004146605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89610.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 400004146605 its reverse (506641400004), we get a palindrome (906645546609).

The spelling of 400004146605 in words is "four hundred billion, four million, one hundred forty-six thousand, six hundred five".