85888181840 has 40 divisors (see below), whose sum is σ = 199776050568. Its totient is φ = 34340472320.

The previous prime is 85888181707. The next prime is 85888181861. The reversal of 85888181840 is 4818188858.

It can be written as a sum of positive squares in 4 ways, for example, as 15278937664 + 70609244176 = 123608^2 + 265724^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 85888181840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43451 + ... + 416730.

Almost surely, 2^85888181840 is an apocalyptic number.

85888181840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85888181840 is an abundant number, since it is smaller than the sum of its proper divisors (113887868728).

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

85888181840 is a wasteful number, since it uses less digits than its factorization.

85888181840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462527 (or 462521 counting only the distinct ones).

The product of its (nonzero) digits is 5242880, while the sum is 59.

The spelling of 85888181840 in words is "eighty-five billion, eight hundred eighty-eight million, one hundred eighty-one thousand, eight hundred forty".