11840450915 has 4 divisors (see below), whose sum is σ = 14208541104. Its totient is φ = 9472360728.

The previous prime is 11840450911. The next prime is 11840450927. The reversal of 11840450915 is 51905404811.

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: 51905404811 = 13 ⋅3992723447.

It is a cyclic number.

It is not a de Polignac number, because 11840450915 - 2² = 11840450911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11840450911) 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, 1184045087 + ... + 1184045096.

It is an arithmetic number, because the mean of its divisors is an integer number (3552135276).

Almost surely, 2^11840450915 is an apocalyptic number.

11840450915 is a deficient number, since it is larger than the sum of its proper divisors (2368090189).

11840450915 is an equidigital number, since it uses as much as digits as its factorization.

11840450915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368090188.

The product of its (nonzero) digits is 28800, while the sum is 38.

The spelling of 11840450915 in words is "eleven billion, eight hundred forty million, four hundred fifty thousand, nine hundred fifteen".