85503211728 has 80 divisors (see below), whose sum is σ = 241040572416. Its totient is φ = 25901787520.

The previous prime is 85503211727. The next prime is 85503211733. The reversal of 85503211728 is 82711230558.

It is a super-3 number, since 3×85503211728³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85503211728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85503211721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1743025 + ... + 1791407.

Almost surely, 2^85503211728 is an apocalyptic number.

85503211728 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

85503211728 is an abundant number, since it is smaller than the sum of its proper divisors (155537360688).

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

85503211728 is a wasteful number, since it uses less digits than its factorization.

85503211728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51752 (or 51746 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 85503211728 in words is "eighty-five billion, five hundred three million, two hundred eleven thousand, seven hundred twenty-eight".