85053532240 has 80 divisors (see below), whose sum is σ = 200638158336. Its totient is φ = 33525273600.

The previous prime is 85053532219. The next prime is 85053532241. The reversal of 85053532240 is 4223535058.

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 85053532240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85053532241) 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, 7183125 + ... + 7194955.

Almost surely, 2^85053532240 is an apocalyptic number.

85053532240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85053532240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100319079168).

85053532240 is an abundant number, since it is smaller than the sum of its proper divisors (115584626096).

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

85053532240 is a wasteful number, since it uses less digits than its factorization.

85053532240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13148 (or 13142 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 85053532240 in words is "eighty-five billion, fifty-three million, five hundred thirty-two thousand, two hundred forty".