1980208758533 has 32 divisors (see below), whose sum is σ = 2223452067840. Its totient is φ = 1752536528640.

The previous prime is 1980208758509. The next prime is 1980208758629. The reversal of 1980208758533 is 3358578020891.

It is a cyclic number.

It is not a de Polignac number, because 1980208758533 - 2⁶ = 1980208758469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980208758833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41410868 + ... + 41458658.

It is an arithmetic number, because the mean of its divisors is an integer number (69482877120).

Almost surely, 2^{1980208758533} is an apocalyptic number.

1980208758533 is the 812447-th octagonal number.

It is an amenable number.

1980208758533 is a deficient number, since it is larger than the sum of its proper divisors (243243309307).

1980208758533 is a wasteful number, since it uses less digits than its factorization.

1980208758533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48777.

The product of its (nonzero) digits is 14515200, while the sum is 59.

The spelling of 1980208758533 in words is "one trillion, nine hundred eighty billion, two hundred eight million, seven hundred fifty-eight thousand, five hundred thirty-three".