1999986547580 has 48 divisors (see below), whose sum is σ = 4911594885120. Its totient is φ = 669762934848.

The previous prime is 1999986547579. The next prime is 1999986547609. The reversal of 1999986547580 is 857456899991.

It is a junction number, because it is equal to n+sod(n) for n = 1999986547495 and 1999986547504.

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, 166105820 + ... + 166117859.

It is an arithmetic number, because the mean of its divisors is an integer number (102324893440).

Almost surely, 2^{1999986547580} is an apocalyptic number.

1999986547580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1999986547580 is an abundant number, since it is smaller than the sum of its proper divisors (2911608337540).

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

1999986547580 is a wasteful number, since it uses less digits than its factorization.

1999986547580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332223738 (or 332223736 counting only the distinct ones).

The product of its (nonzero) digits is 1763596800, while the sum is 80.

The spelling of 1999986547580 in words is "one trillion, nine hundred ninety-nine billion, nine hundred eighty-six million, five hundred forty-seven thousand, five hundred eighty".