2051218071 has 12 divisors (see below), whose sum is σ = 3386137872. Its totient is φ = 1172124576.

The previous prime is 2051218067. The next prime is 2051218087. The reversal of 2051218071 is 1708121502.

2051218071 is a `hidden beast` number, since 2 + 0 + 512 + 1 + 80 + 71 = 666.

It is not a de Polignac number, because 2051218071 - 2² = 2051218067 is a prime.

It is a super-2 number, since 2×2051218071² = 8414991149593922082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051214071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16279446 + ... + 16279571.

It is an arithmetic number, because the mean of its divisors is an integer number (282178156).

Almost surely, 2^2051218071 is an apocalyptic number.

2051218071 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2051218071 is a deficient number, since it is larger than the sum of its proper divisors (1334919801).

2051218071 is a wasteful number, since it uses less digits than its factorization.

2051218071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32559030 (or 32559027 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 2051218071 is about 45290.3750370871. The cubic root of 2051218071 is about 1270.5856457399.

Adding to 2051218071 its reverse (1708121502), we get a palindrome (3759339573).

It can be divided in two parts, 20512 and 18071, that added together give a palindrome (38583).

The spelling of 2051218071 in words is "two billion, fifty-one million, two hundred eighteen thousand, seventy-one".