1681587654880 has 96 divisors (see below), whose sum is σ = 4625952617664. Its totient is φ = 565666123776.

The previous prime is 1681587654853. The next prime is 1681587654913. The reversal of 1681587654880 is 884567851861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14104957 + ... + 14223676.

It is an arithmetic number, because the mean of its divisors is an integer number (48187006434).

Almost surely, 2^{1681587654880} is an apocalyptic number.

1681587654880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1681587654880 is an abundant number, since it is smaller than the sum of its proper divisors (2944364962784).

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

1681587654880 is a wasteful number, since it uses less digits than its factorization.

1681587654880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28328708 (or 28328700 counting only the distinct ones).

The product of its (nonzero) digits is 103219200, while the sum is 67.

The spelling of 1681587654880 in words is "one trillion, six hundred eighty-one billion, five hundred eighty-seven million, six hundred fifty-four thousand, eight hundred eighty".