11861749343 has 4 divisors (see below), whose sum is σ = 12486051960. Its totient is φ = 11237446728.

The previous prime is 11861749297. The next prime is 11861749373. The reversal of 11861749343 is 34394716811.

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

It is a cyclic number.

It is not a de Polignac number, because 11861749343 - 2⁸ = 11861749087 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 (11861749373) 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, 312151280 + ... + 312151317.

It is an arithmetic number, because the mean of its divisors is an integer number (3121512990).

Almost surely, 2^11861749343 is an apocalyptic number.

11861749343 is a deficient number, since it is larger than the sum of its proper divisors (624302617).

11861749343 is an equidigital number, since it uses as much as digits as its factorization.

11861749343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624302616.

The product of its digits is 435456, while the sum is 47.

The spelling of 11861749343 in words is "eleven billion, eight hundred sixty-one million, seven hundred forty-nine thousand, three hundred forty-three".