1986041663745 has 16 divisors (see below), whose sum is σ = 3178224186432. Its totient is φ = 1059036379200.

The previous prime is 1986041663731. The next prime is 1986041663833. The reversal of 1986041663745 is 5473661406891.

It is not a de Polignac number, because 1986041663745 - 2⁶ = 1986041663681 is a prime.

It is a super-2 number, since 2×1986041663745² (a number of 25 digits) contains 22 as substring.

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, 11526727 + ... + 11697756.

It is an arithmetic number, because the mean of its divisors is an integer number (198639011652).

Almost surely, 2^{1986041663745} is an apocalyptic number.

1986041663745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1986041663745 is a deficient number, since it is larger than the sum of its proper divisors (1192182522687).

1986041663745 is a wasteful number, since it uses less digits than its factorization.

1986041663745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23230192.

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 1986041663745 in words is "one trillion, nine hundred eighty-six billion, forty-one million, six hundred sixty-three thousand, seven hundred forty-five".