11115940071 has 4 divisors (see below), whose sum is σ = 14821253432. Its totient is φ = 7410626712.

The previous prime is 11115940037. The next prime is 11115940111. The reversal of 11115940071 is 17004951111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17004951111 = 3 ⋅5668317037.

It is not a de Polignac number, because 11115940071 - 2¹¹ = 11115938023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115940021) 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, 1852656676 + ... + 1852656681.

It is an arithmetic number, because the mean of its divisors is an integer number (3705313358).

Almost surely, 2^11115940071 is an apocalyptic number.

11115940071 is a deficient number, since it is larger than the sum of its proper divisors (3705313361).

11115940071 is an equidigital number, since it uses as much as digits as its factorization.

11115940071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3705313360.

The product of its (nonzero) digits is 1260, while the sum is 30.

The spelling of 11115940071 in words is "eleven billion, one hundred fifteen million, nine hundred forty thousand, seventy-one".