2081256880 has 40 divisors (see below), whose sum is σ = 4842212400. Its totient is φ = 831936768.

The previous prime is 2081256871. The next prime is 2081256899. The reversal of 2081256880 is 886521802.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121486 + ... + 137554.

It is an arithmetic number, because the mean of its divisors is an integer number (121055310).

Almost surely, 2^2081256880 is an apocalyptic number.

2081256880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2081256880 is an abundant number, since it is smaller than the sum of its proper divisors (2760955520).

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

2081256880 is a wasteful number, since it uses less digits than its factorization.

2081256880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17701 (or 17695 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 2081256880 is about 45620.7943815098. The cubic root of 2081256880 is about 1276.7579247310.

The spelling of 2081256880 in words is "two billion, eighty-one million, two hundred fifty-six thousand, eight hundred eighty".