85911204240 has 60 divisors (see below), whose sum is σ = 288518463324. Its totient is φ = 22909654272.

The previous prime is 85911204191. The next prime is 85911204259. The reversal of 85911204240 is 4240211958.

85911204240 is a `hidden beast` number, since 8 + 591 + 1 + 20 + 4 + 2 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17049047184 + 68862157056 = 130572^2 + 262416^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 85911204195 and 85911204204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59659839 + ... + 59661278.

Almost surely, 2^85911204240 is an apocalyptic number.

85911204240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85911204240 is an abundant number, since it is smaller than the sum of its proper divisors (202607259084).

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

85911204240 is a wasteful number, since it uses less digits than its factorization.

85911204240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119321136 (or 119321127 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 85911204240 in words is "eighty-five billion, nine hundred eleven million, two hundred four thousand, two hundred forty".