2051117020 has 24 divisors (see below), whose sum is σ = 4333778064. Its totient is φ = 815412096.

The previous prime is 2051117011. The next prime is 2051117027. The reversal of 2051117020 is 207111502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051117027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311329 + ... + 317848.

It is an arithmetic number, because the mean of its divisors is an integer number (180574086).

Almost surely, 2^2051117020 is an apocalyptic number.

2051117020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051117020 is an abundant number, since it is smaller than the sum of its proper divisors (2282661044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2051117020 is a wasteful number, since it uses less digits than its factorization.

2051117020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629349 (or 629347 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 2051117020 is about 45289.2594331150. The cubic root of 2051117020 is about 1270.5647807296.

Adding to 2051117020 its reverse (207111502), we get a palindrome (2258228522).

The spelling of 2051117020 in words is "two billion, fifty-one million, one hundred seventeen thousand, twenty".