9941888271811 has 2 divisors, whose sum is σ = 9941888271812. Its totient is φ = 9941888271810.

The previous prime is 9941888271713. The next prime is 9941888271817. The reversal of 9941888271811 is 1181728881499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9941888271811 - 2¹¹ = 9941888269763 is a prime.

It is a super-2 number, since 2×9941888271811² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9941888271817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4970944135905 + 4970944135906.

It is an arithmetic number, because the mean of its divisors is an integer number (4970944135906).

Almost surely, 2^{9941888271811} is an apocalyptic number.

9941888271811 is a deficient number, since it is larger than the sum of its proper divisors (1).

9941888271811 is an equidigital number, since it uses as much as digits as its factorization.

9941888271811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18579456, while the sum is 67.

The spelling of 9941888271811 in words is "nine trillion, nine hundred forty-one billion, eight hundred eighty-eight million, two hundred seventy-one thousand, eight hundred eleven".