160398543981 has 24 divisors (see below), whose sum is σ = 231597196320. Its totient is φ = 98160672960.

The previous prime is 160398543953. The next prime is 160398544001. The reversal of 160398543981 is 189345893061.

It is not a de Polignac number, because 160398543981 - 2⁷ = 160398543853 is a prime.

It is a super-2 number, since 2×160398543981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160398543281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1214910 + ... + 1340448.

It is an arithmetic number, because the mean of its divisors is an integer number (9649883180).

Almost surely, 2^160398543981 is an apocalyptic number.

It is an amenable number.

160398543981 is a deficient number, since it is larger than the sum of its proper divisors (71198652339).

160398543981 is a wasteful number, since it uses less digits than its factorization.

160398543981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125917 (or 125736 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 57.

The spelling of 160398543981 in words is "one hundred sixty billion, three hundred ninety-eight million, five hundred forty-three thousand, nine hundred eighty-one".