1980959069029 has 4 divisors (see below), whose sum is σ = 2000572525260. Its totient is φ = 1961345612800.

The previous prime is 1980959069021. The next prime is 1980959069039. The reversal of 1980959069029 is 9209609590891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1936912392900 + 44046676129 = 1391730^2 + 209873^2 .

It is a cyclic number.

It is not a de Polignac number, because 1980959069029 - 2³ = 1980959069021 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 (1980959069021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9806727964 + ... + 9806728165.

It is an arithmetic number, because the mean of its divisors is an integer number (500143131315).

Almost surely, 2^{1980959069029} is an apocalyptic number.

It is an amenable number.

1980959069029 is a deficient number, since it is larger than the sum of its proper divisors (19613456231).

1980959069029 is a wasteful number, since it uses less digits than its factorization.

1980959069029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19613456230.

The product of its (nonzero) digits is 28343520, while the sum is 67.

The spelling of 1980959069029 in words is "one trillion, nine hundred eighty billion, nine hundred fifty-nine million, sixty-nine thousand, twenty-nine".