1864066600020 has 48 divisors (see below), whose sum is σ = 5220420666048. Its totient is φ = 496985932800.

The previous prime is 1864066599979. The next prime is 1864066600049. The reversal of 1864066600020 is 200066604681.

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, 2772349 + ... + 3378468.

It is an arithmetic number, because the mean of its divisors is an integer number (108758763876).

Almost surely, 2^{1864066600020} is an apocalyptic number.

1864066600020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1864066600020 is an abundant number, since it is smaller than the sum of its proper divisors (3356354066028).

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

1864066600020 is a wasteful number, since it uses less digits than its factorization.

1864066600020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155880 (or 6155878 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 1864066600020 in words is "one trillion, eight hundred sixty-four billion, sixty-six million, six hundred thousand, twenty".