11115620365 has 4 divisors (see below), whose sum is σ = 13338744444. Its totient is φ = 8892496288.

The previous prime is 11115620353. The next prime is 11115620377. The reversal of 11115620365 is 56302651111.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (11115620353) and next prime (11115620377).

It can be written as a sum of positive squares in 2 ways, for example, as 2639287876 + 8476332489 = 51374^2 + 92067^2 .

It is a cyclic number.

It is not a de Polignac number, because 11115620365 - 2¹³ = 11115612173 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111562032 + ... + 1111562041.

It is an arithmetic number, because the mean of its divisors is an integer number (3334686111).

Almost surely, 2^11115620365 is an apocalyptic number.

It is an amenable number.

11115620365 is a deficient number, since it is larger than the sum of its proper divisors (2223124079).

11115620365 is an equidigital number, since it uses as much as digits as its factorization.

11115620365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223124078.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 11115620365 in words is "eleven billion, one hundred fifteen million, six hundred twenty thousand, three hundred sixty-five".