981105401111 has 16 divisors (see below), whose sum is σ = 1096634571648. Its totient is φ = 870020676000.

The previous prime is 981105401093. The next prime is 981105401231. The reversal of 981105401111 is 111104501189.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981105401111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981105400111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011965 + ... + 1728086.

It is an arithmetic number, because the mean of its divisors is an integer number (68539660728).

Almost surely, 2^981105401111 is an apocalyptic number.

981105401111 is a deficient number, since it is larger than the sum of its proper divisors (115529170537).

981105401111 is a wasteful number, since it uses less digits than its factorization.

981105401111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740862.

The product of its (nonzero) digits is 1440, while the sum is 32.

The spelling of 981105401111 in words is "nine hundred eighty-one billion, one hundred five million, four hundred one thousand, one hundred eleven".