111654663128 has 8 divisors (see below), whose sum is σ = 209352493380. Its totient is φ = 55827331560.

The previous prime is 111654663101. The next prime is 111654663151. The reversal of 111654663128 is 821366456111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6978416438 + ... + 6978416453.

Almost surely, 2^111654663128 is an apocalyptic number.

It is an amenable number.

111654663128 is a deficient number, since it is larger than the sum of its proper divisors (97697830252).

111654663128 is a wasteful number, since it uses less digits than its factorization.

111654663128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13956832897 (or 13956832893 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The spelling of 111654663128 in words is "one hundred eleven billion, six hundred fifty-four million, six hundred sixty-three thousand, one hundred twenty-eight".