1983720159057 has 64 divisors (see below), whose sum is σ = 3447222879744. Its totient is φ = 984694026240.

The previous prime is 1983720159019. The next prime is 1983720159067. The reversal of 1983720159057 is 7509510273891.

It is not a de Polignac number, because 1983720159057 - 2⁸ = 1983720158801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1983720158988 and 1983720159006.

It is not an unprimeable number, because it can be changed into a prime (1983720159007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52243323 + ... + 52281279.

It is an arithmetic number, because the mean of its divisors is an integer number (53862857496).

Almost surely, 2^{1983720159057} is an apocalyptic number.

1983720159057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1983720159057 is a deficient number, since it is larger than the sum of its proper divisors (1463502720687).

1983720159057 is a wasteful number, since it uses less digits than its factorization.

1983720159057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49258.

The product of its (nonzero) digits is 4762800, while the sum is 57.

The spelling of 1983720159057 in words is "one trillion, nine hundred eighty-three billion, seven hundred twenty million, one hundred fifty-nine thousand, fifty-seven".