400986032643 has 12 divisors (see below), whose sum is σ = 661945196848. Its totient is φ = 229134875760.

The previous prime is 400986032633. The next prime is 400986032651. The reversal of 400986032643 is 346230689004.

It is not a de Polignac number, because 400986032643 - 2²⁵ = 400952478211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400986032633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3182428768 + ... + 3182428893.

Almost surely, 2^400986032643 is an apocalyptic number.

400986032643 is a deficient number, since it is larger than the sum of its proper divisors (260959164205).

400986032643 is a wasteful number, since it uses less digits than its factorization.

400986032643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6364857674 (or 6364857671 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 400986032643 in words is "four hundred billion, nine hundred eighty-six million, thirty-two thousand, six hundred forty-three".