2051208667 has 2 divisors, whose sum is σ = 2051208668. Its totient is φ = 2051208666.

The previous prime is 2051208583. The next prime is 2051208671. The reversal of 2051208667 is 7668021502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2051208667 is a prime.

It is not a weakly prime, because it can be changed into another prime (2051203667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025604333 + 1025604334.

It is an arithmetic number, because the mean of its divisors is an integer number (1025604334).

Almost surely, 2^2051208667 is an apocalyptic number.

2051208667 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051208667 is an equidigital number, since it uses as much as digits as its factorization.

2051208667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 2051208667 is about 45290.2712180000. The cubic root of 2051208667 is about 1270.5837040309.

The spelling of 2051208667 in words is "two billion, fifty-one million, two hundred eight thousand, six hundred sixty-seven".