7211895863 has 2 divisors, whose sum is σ = 7211895864. Its totient is φ = 7211895862.

The previous prime is 7211895833. The next prime is 7211895923. The reversal of 7211895863 is 3685981127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7211895863 - 2⁶ = 7211895799 is a prime.

It is a super-2 number, since 2×7211895863² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7211895833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3605947931 + 3605947932.

It is an arithmetic number, because the mean of its divisors is an integer number (3605947932).

Almost surely, 2^7211895863 is an apocalyptic number.

7211895863 is a deficient number, since it is larger than the sum of its proper divisors (1).

7211895863 is an equidigital number, since it uses as much as digits as its factorization.

7211895863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 50.

The square root of 7211895863 is about 84922.8818576007. The cubic root of 7211895863 is about 1932.0416404965.

The spelling of 7211895863 in words is "seven billion, two hundred eleven million, eight hundred ninety-five thousand, eight hundred sixty-three".