11155100465 has 4 divisors (see below), whose sum is σ = 13386120564. Its totient is φ = 8924080368.

The previous prime is 11155100459. The next prime is 11155100471. The reversal of 11155100465 is 56400155111.

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 (11155100459) and next prime (11155100471).

It can be written as a sum of positive squares in 2 ways, for example, as 3863989921 + 7291110544 = 62161^2 + 85388^2 .

It is a cyclic number.

It is not a de Polignac number, because 11155100465 - 2⁴ = 11155100449 is a prime.

It is a Duffinian 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, 1115510042 + ... + 1115510051.

It is an arithmetic number, because the mean of its divisors is an integer number (3346530141).

Almost surely, 2^11155100465 is an apocalyptic number.

It is an amenable number.

11155100465 is a deficient number, since it is larger than the sum of its proper divisors (2231020099).

11155100465 is an equidigital number, since it uses as much as digits as its factorization.

11155100465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231020098.

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 11155100465 its reverse (56400155111), we get a palindrome (67555255576).

The spelling of 11155100465 in words is "eleven billion, one hundred fifty-five million, one hundred thousand, four hundred sixty-five".