85757758866 has 96 divisors (see below), whose sum is σ = 205347804480. Its totient is φ = 25702365312.

The previous prime is 85757758861. The next prime is 85757758873. The reversal of 85757758866 is 66885775758.

It is a junction number, because it is equal to n+sod(n) for n = 85757758794 and 85757758803.

It is not an unprimeable number, because it can be changed into a prime (85757758861) 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, 1699005 + ... + 1748751.

It is an arithmetic number, because the mean of its divisors is an integer number (2139039630).

Almost surely, 2^85757758866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85757758866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102673902240).

85757758866 is an abundant number, since it is smaller than the sum of its proper divisors (119590045614).

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

85757758866 is a wasteful number, since it uses less digits than its factorization.

85757758866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49960 (or 49957 counting only the distinct ones).

The product of its digits is 790272000, while the sum is 72.

The spelling of 85757758866 in words is "eighty-five billion, seven hundred fifty-seven million, seven hundred fifty-eight thousand, eight hundred sixty-six".