85458451440 has 80 divisors (see below), whose sum is σ = 273467068416. Its totient is φ = 22053792000.

The previous prime is 85458451367. The next prime is 85458451447. The reversal of 85458451440 is 4415485458.

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

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 85458451440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85458451447) 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, 5735736 + ... + 5750615.

Almost surely, 2^85458451440 is an apocalyptic number.

85458451440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85458451440 is an abundant number, since it is smaller than the sum of its proper divisors (188008616976).

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

85458451440 is a wasteful number, since it uses less digits than its factorization.

85458451440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11486398 (or 11486392 counting only the distinct ones).

The product of its (nonzero) digits is 2048000, while the sum is 48.

The spelling of 85458451440 in words is "eighty-five billion, four hundred fifty-eight million, four hundred fifty-one thousand, four hundred forty".