11505505373 has 2 divisors, whose sum is σ = 11505505374. Its totient is φ = 11505505372.

The previous prime is 11505505357. The next prime is 11505505553. The reversal of 11505505373 is 37350550511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9178214809 + 2327290564 = 95803^2 + 48242^2 .

It is a cyclic number.

It is not a de Polignac number, because 11505505373 - 2⁴ = 11505505357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11505505273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752752686 + 5752752687.

It is an arithmetic number, because the mean of its divisors is an integer number (5752752687).

Almost surely, 2^11505505373 is an apocalyptic number.

It is an amenable number.

11505505373 is a deficient number, since it is larger than the sum of its proper divisors (1).

11505505373 is an equidigital number, since it uses as much as digits as its factorization.

11505505373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39375, while the sum is 35.

The spelling of 11505505373 in words is "eleven billion, five hundred five million, five hundred five thousand, three hundred seventy-three".