7211957159 has 16 divisors (see below), whose sum is σ = 8053378560. Its totient is φ = 6402140160.

The previous prime is 7211957111. The next prime is 7211957173. The reversal of 7211957159 is 9517591127.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7211957159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7211953159) 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 in 15 ways as a sum of consecutive naturals, for example, 213287 + ... + 244775.

It is an arithmetic number, because the mean of its divisors is an integer number (503336160).

Almost surely, 2^7211957159 is an apocalyptic number.

7211957159 is a deficient number, since it is larger than the sum of its proper divisors (841421401).

7211957159 is a wasteful number, since it uses less digits than its factorization.

7211957159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31990.

The product of its digits is 198450, while the sum is 47.

The square root of 7211957159 is about 84923.2427489671. The cubic root of 7211957159 is about 1932.0471141422.

The spelling of 7211957159 in words is "seven billion, two hundred eleven million, nine hundred fifty-seven thousand, one hundred fifty-nine".