11398398985 has 8 divisors (see below), whose sum is σ = 13716181440. Its totient is φ = 9093317424.

The previous prime is 11398398983. The next prime is 11398398997. The reversal of 11398398985 is 58989389311.

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 11398398985 - 2¹ = 11398398983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11398398983) 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, 3173247 + ... + 3176836.

It is an arithmetic number, because the mean of its divisors is an integer number (1714522680).

Almost surely, 2^11398398985 is an apocalyptic number.

It is an amenable number.

11398398985 is a deficient number, since it is larger than the sum of its proper divisors (2317782455).

11398398985 is an equidigital number, since it uses as much as digits as its factorization.

11398398985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6350447.

The product of its digits is 16796160, while the sum is 64.

The spelling of 11398398985 in words is "eleven billion, three hundred ninety-eight million, three hundred ninety-eight thousand, nine hundred eighty-five".