2051121150571 has 8 divisors (see below), whose sum is σ = 2056228614720. Its totient is φ = 2046014697672.

The previous prime is 2051121150569. The next prime is 2051121150581. The reversal of 2051121150571 is 1750511211502.

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 2051121150571 - 2¹ = 2051121150569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051121150581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3893316 + ... + 4388638.

It is an arithmetic number, because the mean of its divisors is an integer number (257028576840).

Almost surely, 2^{2051121150571} is an apocalyptic number.

2051121150571 is a deficient number, since it is larger than the sum of its proper divisors (5107464149).

2051121150571 is an equidigital number, since it uses as much as digits as its factorization.

2051121150571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505625.

The product of its (nonzero) digits is 3500, while the sum is 31.

The spelling of 2051121150571 in words is "two trillion, fifty-one billion, one hundred twenty-one million, one hundred fifty thousand, five hundred seventy-one".