85781732758 has 8 divisors (see below), whose sum is σ = 128686227840. Its totient is φ = 42886323480.

The previous prime is 85781732713. The next prime is 85781732831. The reversal of 85781732758 is 85723718758.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 85781732696 and 85781732705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2247798 + ... + 2285641.

It is an arithmetic number, because the mean of its divisors is an integer number (16085778480).

Almost surely, 2^85781732758 is an apocalyptic number.

85781732758 is a deficient number, since it is larger than the sum of its proper divisors (42904495082).

85781732758 is a wasteful number, since it uses less digits than its factorization.

85781732758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542902.

The product of its digits is 26342400, while the sum is 61.

The spelling of 85781732758 in words is "eighty-five billion, seven hundred eighty-one million, seven hundred thirty-two thousand, seven hundred fifty-eight".