2050171850721 has 8 divisors (see below), whose sum is σ = 2800234723104. Its totient is φ = 1333445106080.

The previous prime is 2050171850717. The next prime is 2050171850731. The reversal of 2050171850721 is 1270581710502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2050171850721 - 2² = 2050171850717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2050171850721.

It is not an unprimeable number, because it can be changed into a prime (2050171850731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8334031791 + ... + 8334032036.

It is an arithmetic number, because the mean of its divisors is an integer number (350029340388).

Almost surely, 2^{2050171850721} is an apocalyptic number.

It is an amenable number.

2050171850721 is a deficient number, since it is larger than the sum of its proper divisors (750062872383).

2050171850721 is a wasteful number, since it uses less digits than its factorization.

2050171850721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16668063871.

The product of its (nonzero) digits is 39200, while the sum is 39.

The spelling of 2050171850721 in words is "two trillion, fifty billion, one hundred seventy-one million, eight hundred fifty thousand, seven hundred twenty-one".