168477831643 has 16 divisors (see below), whose sum is σ = 195382909440. Its totient is φ = 143663868000.

The previous prime is 168477831637. The next prime is 168477831667. The reversal of 168477831643 is 346138774861.

It is a cyclic number.

It is not a de Polignac number, because 168477831643 - 2⁹ = 168477831131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168477831623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3969555 + ... + 4011772.

It is an arithmetic number, because the mean of its divisors is an integer number (12211431840).

Almost surely, 2^168477831643 is an apocalyptic number.

168477831643 is a deficient number, since it is larger than the sum of its proper divisors (26905077797).

168477831643 is a wasteful number, since it uses less digits than its factorization.

168477831643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7981458.

The product of its digits is 16257024, while the sum is 58.

The spelling of 168477831643 in words is "one hundred sixty-eight billion, four hundred seventy-seven million, eight hundred thirty-one thousand, six hundred forty-three".