85781161732 has 12 divisors (see below), whose sum is σ = 171562323520. Its totient is φ = 36763355016.

The previous prime is 85781161729. The next prime is 85781161757. The reversal of 85781161732 is 23716118758.

85781161732 is an admirable number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1531806432 + ... + 1531806487.

Almost surely, 2^85781161732 is an apocalyptic number.

It is an amenable number.

85781161732 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85781161732 is a wasteful number, since it uses less digits than its factorization.

85781161732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063612930 (or 3063612928 counting only the distinct ones).

The product of its digits is 564480, while the sum is 49.

The spelling of 85781161732 in words is "eighty-five billion, seven hundred eighty-one million, one hundred sixty-one thousand, seven hundred thirty-two".