1001680861020 has 96 divisors (see below), whose sum is σ = 3211907682816. Its totient is φ = 228489273600.

The previous prime is 1001680861019. The next prime is 1001680861057. The reversal of 1001680861020 is 201680861001.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 2222451 + ... + 2634890.

It is an arithmetic number, because the mean of its divisors is an integer number (33457371696).

Almost surely, 2^{1001680861020} is an apocalyptic number.

1001680861020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001680861020 is an abundant number, since it is smaller than the sum of its proper divisors (2210226821796).

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

1001680861020 is a wasteful number, since it uses less digits than its factorization.

1001680861020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857851 (or 4857849 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The spelling of 1001680861020 in words is "one trillion, one billion, six hundred eighty million, eight hundred sixty-one thousand, twenty".