400466023461 has 56 divisors (see below), whose sum is σ = 700203780800. Its totient is φ = 228837584808.

The previous prime is 400466023427. The next prime is 400466023499. The reversal of 400466023461 is 164320664004.

400466023461 is a `hidden beast` number, since 4 + 0 + 0 + 4 + 6 + 602 + 3 + 46 + 1 = 666.

It is not a de Polignac number, because 400466023461 - 2¹⁸ = 400465761317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400466023561) by changing a digit.

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 55 ways as a sum of consecutive naturals, for example, 550735 + ... + 1050828.

Almost surely, 2^400466023461 is an apocalyptic number.

It is an amenable number.

400466023461 is a deficient number, since it is larger than the sum of its proper divisors (299737757339).

400466023461 is an frugal number, since it uses more digits than its factorization.

400466023461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601602 (or 1601573 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 400466023461 its reverse (164320664004), we get a palindrome (564786687465).

The spelling of 400466023461 in words is "four hundred billion, four hundred sixty-six million, twenty-three thousand, four hundred sixty-one".