2864706508891 has 2 divisors, whose sum is σ = 2864706508892. Its totient is φ = 2864706508890.

The previous prime is 2864706508871. The next prime is 2864706508903. The reversal of 2864706508891 is 1988056074682.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2864706508891 - 2¹¹ = 2864706506843 is a prime.

It is a super-2 number, since 2×2864706508891² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2864706508871) 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 as a sum of consecutive naturals, namely, 1432353254445 + 1432353254446.

It is an arithmetic number, because the mean of its divisors is an integer number (1432353254446).

Almost surely, 2^{2864706508891} is an apocalyptic number.

2864706508891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2864706508891 is an equidigital number, since it uses as much as digits as its factorization.

2864706508891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46448640, while the sum is 64.

The spelling of 2864706508891 in words is "two trillion, eight hundred sixty-four billion, seven hundred six million, five hundred eight thousand, eight hundred ninety-one".