160731521643 has 48 divisors (see below), whose sum is σ = 270081197568. Its totient is φ = 83228006400.

The previous prime is 160731521633. The next prime is 160731521659. The reversal of 160731521643 is 346125137061.

It is not a de Polignac number, because 160731521643 - 2¹⁶ = 160731456107 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (160731521633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 688555 + ... + 891947.

It is an arithmetic number, because the mean of its divisors is an integer number (5626691616).

Almost surely, 2^160731521643 is an apocalyptic number.

160731521643 is a deficient number, since it is larger than the sum of its proper divisors (109349675925).

160731521643 is a wasteful number, since it uses less digits than its factorization.

160731521643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203736 (or 203725 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 160731521643 in words is "one hundred sixty billion, seven hundred thirty-one million, five hundred twenty-one thousand, six hundred forty-three".