85540508867508 has 24 divisors (see below), whose sum is σ = 199594693230912. Its totient is φ = 28513478307264.

The previous prime is 85540508867507. The next prime is 85540508867533. The reversal of 85540508867508 is 80576880504558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85540508867507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16210641 + ... + 20829447.

It is an arithmetic number, because the mean of its divisors is an integer number (8316445551288).

Almost surely, 2^{85540508867508} is an apocalyptic number.

It is an amenable number.

85540508867508 is an abundant number, since it is smaller than the sum of its proper divisors (114054184363404).

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

85540508867508 is a wasteful number, since it uses less digits than its factorization.

85540508867508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6162151 (or 6162149 counting only the distinct ones).

The product of its (nonzero) digits is 430080000, while the sum is 69.

The spelling of 85540508867508 in words is "eighty-five trillion, five hundred forty billion, five hundred eight million, eight hundred sixty-seven thousand, five hundred eight".