85187501040 has 80 divisors (see below), whose sum is σ = 265063168800. Its totient is φ = 22632201216.

The previous prime is 85187500961. The next prime is 85187501093. The reversal of 85187501040 is 4010578158.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 85187501040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595195 + ... + 724314.

It is an arithmetic number, because the mean of its divisors is an integer number (3313289610).

Almost surely, 2^85187501040 is an apocalyptic number.

85187501040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85187501040 is an abundant number, since it is smaller than the sum of its proper divisors (179875667760).

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

85187501040 is a wasteful number, since it uses less digits than its factorization.

85187501040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319794 (or 1319788 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 39.

The spelling of 85187501040 in words is "eighty-five billion, one hundred eighty-seven million, five hundred one thousand, forty".