11345778889 has 8 divisors (see below), whose sum is σ = 11615283680. Its totient is φ = 11076530976.

The previous prime is 11345778887. The next prime is 11345778907. The reversal of 11345778889 is 98887754311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11345778889 - 2¹ = 11345778887 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11345778887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26674 + ... + 152980.

It is an arithmetic number, because the mean of its divisors is an integer number (1451910460).

Almost surely, 2^11345778889 is an apocalyptic number.

It is an amenable number.

11345778889 is a deficient number, since it is larger than the sum of its proper divisors (269504791).

11345778889 is a wasteful number, since it uses less digits than its factorization.

11345778889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128439.

The product of its digits is 13547520, while the sum is 61.

The spelling of 11345778889 in words is "eleven billion, three hundred forty-five million, seven hundred seventy-eight thousand, eight hundred eighty-nine".