11100712505 has 4 divisors (see below), whose sum is σ = 13320855012. Its totient is φ = 8880570000.

The previous prime is 11100712487. The next prime is 11100712507. The reversal of 11100712505 is 50521700111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4568678464 + 6532034041 = 67592^2 + 80821^2 .

It is not a de Polignac number, because 11100712505 - 2¹⁴ = 11100696121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11100712507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110071246 + ... + 1110071255.

It is an arithmetic number, because the mean of its divisors is an integer number (3330213753).

Almost surely, 2^11100712505 is an apocalyptic number.

It is an amenable number.

11100712505 is a deficient number, since it is larger than the sum of its proper divisors (2220142507).

11100712505 is an equidigital number, since it uses as much as digits as its factorization.

11100712505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220142506.

The product of its (nonzero) digits is 350, while the sum is 23.

The spelling of 11100712505 in words is "eleven billion, one hundred million, seven hundred twelve thousand, five hundred five".