7016420891 has 2 divisors, whose sum is σ = 7016420892. Its totient is φ = 7016420890.

The previous prime is 7016420869. The next prime is 7016420893. The reversal of 7016420891 is 1980246107.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7016420891 - 2²² = 7012226587 is a prime.

It is a super-2 number, since 2×7016420891² = 98460324239322467762, which contains 22 as substring.

Together with 7016420893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7016420893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3508210445 + 3508210446.

It is an arithmetic number, because the mean of its divisors is an integer number (3508210446).

Almost surely, 2^7016420891 is an apocalyptic number.

7016420891 is a deficient number, since it is larger than the sum of its proper divisors (1).

7016420891 is an equidigital number, since it uses as much as digits as its factorization.

7016420891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 7016420891 is about 83764.0787629160. The cubic root of 7016420891 is about 1914.4258258130.

Adding to 7016420891 its reverse (1980246107), we get a palindrome (8996666998).

The spelling of 7016420891 in words is "seven billion, sixteen million, four hundred twenty thousand, eight hundred ninety-one".