11138750985 has 16 divisors (see below), whose sum is σ = 17823792960. Its totient is φ = 5940070080.

The previous prime is 11138750981. The next prime is 11138750993. The reversal of 11138750985 is 58905783111.

It is a happy number.

It is not a de Polignac number, because 11138750985 - 2² = 11138750981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11138750981) 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 15 ways as a sum of consecutive naturals, for example, 145906 + ... + 208724.

It is an arithmetic number, because the mean of its divisors is an integer number (1113987060).

Almost surely, 2^11138750985 is an apocalyptic number.

11138750985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11138750985 is a deficient number, since it is larger than the sum of its proper divisors (6685041975).

11138750985 is a wasteful number, since it uses less digits than its factorization.

11138750985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74648.

The product of its (nonzero) digits is 302400, while the sum is 48.

The spelling of 11138750985 in words is "eleven billion, one hundred thirty-eight million, seven hundred fifty thousand, nine hundred eighty-five".