85345687880 has 16 divisors (see below), whose sum is σ = 192027797820. Its totient is φ = 34138275136.

The previous prime is 85345687849. The next prime is 85345687883. The reversal of 85345687880 is 8878654358.

It can be written as a sum of positive squares in 2 ways, for example, as 84212557636 + 1133130244 = 290194^2 + 33662^2 .

It is not an unprimeable number, because it can be changed into a prime (85345687883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066821059 + ... + 1066821138.

Almost surely, 2^85345687880 is an apocalyptic number.

It is an amenable number.

85345687880 is an abundant number, since it is smaller than the sum of its proper divisors (106682109940).

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

85345687880 is a wasteful number, since it uses less digits than its factorization.

85345687880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133642208 (or 2133642204 counting only the distinct ones).

The product of its (nonzero) digits is 51609600, while the sum is 62.

The spelling of 85345687880 in words is "eighty-five billion, three hundred forty-five million, six hundred eighty-seven thousand, eight hundred eighty".