111551550406 has 8 divisors (see below), whose sum is σ = 168808098744. Its totient is φ = 55282184160.

The previous prime is 111551550373. The next prime is 111551550431. The reversal of 111551550406 is 604055155111.

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

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 in 3 ways as a sum of consecutive naturals, for example, 246795240 + ... + 246795691.

It is an arithmetic number, because the mean of its divisors is an integer number (21101012343).

Almost surely, 2^111551550406 is an apocalyptic number.

111551550406 is a deficient number, since it is larger than the sum of its proper divisors (57256548338).

111551550406 is a wasteful number, since it uses less digits than its factorization.

111551550406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493591046.

The product of its (nonzero) digits is 15000, while the sum is 34.

The spelling of 111551550406 in words is "one hundred eleven billion, five hundred fifty-one million, five hundred fifty thousand, four hundred six".