10111711993 has 2 divisors, whose sum is σ = 10111711994. Its totient is φ = 10111711992.

The previous prime is 10111711963. The next prime is 10111711997. The reversal of 10111711993 is 39911711101.

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., 6223316544 + 3888395449 = 78888^2 + 62357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10111711993 is a prime.

It is not a weakly prime, because it can be changed into another prime (10111711997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055855996 + 5055855997.

It is an arithmetic number, because the mean of its divisors is an integer number (5055855997).

Almost surely, 2^10111711993 is an apocalyptic number.

It is an amenable number.

10111711993 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111711993 is an equidigital number, since it uses as much as digits as its factorization.

10111711993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701, while the sum is 34.

The spelling of 10111711993 in words is "ten billion, one hundred eleven million, seven hundred eleven thousand, nine hundred ninety-three".