1285581418080 has 96 divisors (see below), whose sum is σ = 4052799878400. Its totient is φ = 342549253632.

The previous prime is 1285581418067. The next prime is 1285581418097. The reversal of 1285581418080 is 808141855821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 459340 + ... + 1667979.

It is an arithmetic number, because the mean of its divisors is an integer number (42216665400).

Almost surely, 2^{1285581418080} is an apocalyptic number.

1285581418080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1285581418080 is an abundant number, since it is smaller than the sum of its proper divisors (2767218460320).

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

1285581418080 is a wasteful number, since it uses less digits than its factorization.

1285581418080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128596 (or 2128588 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 51.

The spelling of 1285581418080 in words is "one trillion, two hundred eighty-five billion, five hundred eighty-one million, four hundred eighteen thousand, eighty".