2061712149789 has 4 divisors (see below), whose sum is σ = 2748949533056. Its totient is φ = 1374474766524.

The previous prime is 2061712149769. The next prime is 2061712149799. The reversal of 2061712149789 is 9879412171602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2061712149789 - 2²⁰ = 2061711101213 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 (2061712149769) 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, 343618691629 + ... + 343618691634.

It is an arithmetic number, because the mean of its divisors is an integer number (687237383264).

Almost surely, 2^{2061712149789} is an apocalyptic number.

It is an amenable number.

2061712149789 is a deficient number, since it is larger than the sum of its proper divisors (687237383267).

2061712149789 is an equidigital number, since it uses as much as digits as its factorization.

2061712149789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687237383266.

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 2061712149789 in words is "two trillion, sixty-one billion, seven hundred twelve million, one hundred forty-nine thousand, seven hundred eighty-nine".