11111010109973 has 2 divisors, whose sum is σ = 11111010109974. Its totient is φ = 11111010109972.

The previous prime is 11111010109921. The next prime is 11111010109987. The reversal of 11111010109973 is 37990101011111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8852427941809 + 2258582168164 = 2975303^2 + 1502858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111010109973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111010109993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555505054986 + 5555505054987.

It is an arithmetic number, because the mean of its divisors is an integer number (5555505054987).

Almost surely, 2^{11111010109973} is an apocalyptic number.

It is an amenable number.

11111010109973 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111010109973 is an equidigital number, since it uses as much as digits as its factorization.

11111010109973 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 35.

The spelling of 11111010109973 in words is "eleven trillion, one hundred eleven billion, ten million, one hundred nine thousand, nine hundred seventy-three".