85661345088 has 84 divisors (see below), whose sum is σ = 267853960608. Its totient is φ = 25957981440.

The previous prime is 85661345087. The next prime is 85661345089. The reversal of 85661345088 is 88054316658.

85661345088 is a `hidden beast` number, since 8 + 56 + 61 + 3 + 450 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (85661345087) and next prime (85661345089).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85661345087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6753556 + ... + 6766227.

Almost surely, 2^85661345088 is an apocalyptic number.

85661345088 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

85661345088 is an abundant number, since it is smaller than the sum of its proper divisors (182192615520).

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

85661345088 is a wasteful number, since it uses less digits than its factorization.

85661345088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13519812 (or 13519799 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 85661345088 in words is "eighty-five billion, six hundred sixty-one million, three hundred forty-five thousand, eighty-eight".