2051251045867 has 2 divisors, whose sum is σ = 2051251045868. Its totient is φ = 2051251045866.

The previous prime is 2051251045853. The next prime is 2051251045933. The reversal of 2051251045867 is 7685401521502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2051251045867 - 2¹⁵ = 2051251013099 is a prime.

It is a super-2 number, since 2×2051251045867² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2051251043867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025625522933 + 1025625522934.

It is an arithmetic number, because the mean of its divisors is an integer number (1025625522934).

Almost surely, 2^{2051251045867} is an apocalyptic number.

2051251045867 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051251045867 is an equidigital number, since it uses as much as digits as its factorization.

2051251045867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 2051251045867 in words is "two trillion, fifty-one billion, two hundred fifty-one million, forty-five thousand, eight hundred sixty-seven".