111164851405550 has 48 divisors (see below), whose sum is σ = 209964865174272. Its totient is φ = 43778856184800.

The previous prime is 111164851405471. The next prime is 111164851405579. The reversal of 111164851405550 is 55504158461111.

It is a junction number, because it is equal to n+sod(n) for n = 111164851405495 and 111164851405504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2600012 + ... + 15135711.

It is an arithmetic number, because the mean of its divisors is an integer number (4374268024464).

Almost surely, 2^{111164851405550} is an apocalyptic number.

111164851405550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111164851405550 is a deficient number, since it is larger than the sum of its proper divisors (98800013768722).

111164851405550 is a wasteful number, since it uses less digits than its factorization.

111164851405550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17737673 (or 17737668 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 47.

The spelling of 111164851405550 in words is "one hundred eleven trillion, one hundred sixty-four billion, eight hundred fifty-one million, four hundred five thousand, five hundred fifty".