1986986419712 has 80 divisors (see below), whose sum is σ = 4551746577312. Its totient is φ = 848844472320.

The previous prime is 1986986419711. The next prime is 1986986419727. The reversal of 1986986419712 is 2179146896891.

It is a super-3 number, since 3×1986986419712³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986986419711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236162 + ... + 2007422.

Almost surely, 2^{1986986419712} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1986986419712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2275873288656).

1986986419712 is an abundant number, since it is smaller than the sum of its proper divisors (2564760157600).

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

1986986419712 is an equidigital number, since it uses as much as digits as its factorization.

1986986419712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771599 (or 1771583 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 71.

The spelling of 1986986419712 in words is "one trillion, nine hundred eighty-six billion, nine hundred eighty-six million, four hundred nineteen thousand, seven hundred twelve".