2720781285680 has 40 divisors (see below), whose sum is σ = 6346156793184. Its totient is φ = 1084813107200.

The previous prime is 2720781285667. The next prime is 2720781285697. The reversal of 2720781285680 is 865821870272.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54653201 + ... + 54702960.

Almost surely, 2^{2720781285680} is an apocalyptic number.

2720781285680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2720781285680 is an abundant number, since it is smaller than the sum of its proper divisors (3625375507504).

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

2720781285680 is a wasteful number, since it uses less digits than its factorization.

2720781285680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109356485 (or 109356479 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 56.

The spelling of 2720781285680 in words is "two trillion, seven hundred twenty billion, seven hundred eighty-one million, two hundred eighty-five thousand, six hundred eighty".