211157158913 has 2 divisors, whose sum is σ = 211157158914. Its totient is φ = 211157158912.

The previous prime is 211157158873. The next prime is 211157158951. The reversal of 211157158913 is 319851751112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106636208704 + 104520950209 = 326552^2 + 323297^2 .

It is a cyclic number.

It is not a de Polignac number, because 211157158913 - 2¹⁶ = 211157093377 is a prime.

It is not a weakly prime, because it can be changed into another prime (211157158613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105578579456 + 105578579457.

It is an arithmetic number, because the mean of its divisors is an integer number (105578579457).

Almost surely, 2^211157158913 is an apocalyptic number.

It is an amenable number.

211157158913 is a deficient number, since it is larger than the sum of its proper divisors (1).

211157158913 is an equidigital number, since it uses as much as digits as its factorization.

211157158913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 44.

The spelling of 211157158913 in words is "two hundred eleven billion, one hundred fifty-seven million, one hundred fifty-eight thousand, nine hundred thirteen".