11870288305 has 4 divisors (see below), whose sum is σ = 14244345972. Its totient is φ = 9496230640.

The previous prime is 11870288303. The next prime is 11870288327. The reversal of 11870288305 is 50388207811.

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 1654536976 + 10215751329 = 40676^2 + 101073^2 .

It is not a de Polignac number, because 11870288305 - 2¹ = 11870288303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11870288303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187028826 + ... + 1187028835.

It is an arithmetic number, because the mean of its divisors is an integer number (3561086493).

Almost surely, 2^11870288305 is an apocalyptic number.

It is an amenable number.

11870288305 is a deficient number, since it is larger than the sum of its proper divisors (2374057667).

11870288305 is an equidigital number, since it uses as much as digits as its factorization.

11870288305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374057666.

The product of its (nonzero) digits is 107520, while the sum is 43.

The spelling of 11870288305 in words is "eleven billion, eight hundred seventy million, two hundred eighty-eight thousand, three hundred five".