168433774481 has 64 divisors (see below), whose sum is σ = 219119040000. Its totient is φ = 128830141440.

The previous prime is 168433774471. The next prime is 168433774499. The reversal of 168433774481 is 184477334861.

It is not a de Polignac number, because 168433774481 - 2⁶ = 168433774417 is a prime.

It is a super-2 number, since 2×168433774481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168433774471) 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, 7737845 + ... + 7759581.

It is an arithmetic number, because the mean of its divisors is an integer number (3423735000).

Almost surely, 2^168433774481 is an apocalyptic number.

It is an amenable number.

168433774481 is a deficient number, since it is larger than the sum of its proper divisors (50685265519).

168433774481 is a wasteful number, since it uses less digits than its factorization.

168433774481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21847 (or 21833 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 56.

The spelling of 168433774481 in words is "one hundred sixty-eight billion, four hundred thirty-three million, seven hundred seventy-four thousand, four hundred eighty-one".