11290343861 has 4 divisors (see below), whose sum is σ = 11376529824. Its totient is φ = 11204157900.

The previous prime is 11290343851. The next prime is 11290343917. The reversal of 11290343861 is 16834309211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11290343861 - 2¹⁸ = 11290081717 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 (11290343821) 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, 43092785 + ... + 43093046.

It is an arithmetic number, because the mean of its divisors is an integer number (2844132456).

Almost surely, 2^11290343861 is an apocalyptic number.

It is an amenable number.

11290343861 is a deficient number, since it is larger than the sum of its proper divisors (86185963).

11290343861 is an equidigital number, since it uses as much as digits as its factorization.

11290343861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86185962.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 11290343861 in words is "eleven billion, two hundred ninety million, three hundred forty-three thousand, eight hundred sixty-one".