111719209553 has 16 divisors (see below), whose sum is σ = 135389418624. Its totient is φ = 89993230080.

The previous prime is 111719209549. The next prime is 111719209603. The reversal of 111719209553 is 355902917111.

It is a cyclic number.

It is not a de Polignac number, because 111719209553 - 2² = 111719209549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111719209153) 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, 612803 + ... + 773928.

It is an arithmetic number, because the mean of its divisors is an integer number (8461838664).

Almost surely, 2^111719209553 is an apocalyptic number.

It is an amenable number.

111719209553 is a deficient number, since it is larger than the sum of its proper divisors (23670209071).

111719209553 is a wasteful number, since it uses less digits than its factorization.

111719209553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387432.

The product of its (nonzero) digits is 85050, while the sum is 44.

The spelling of 111719209553 in words is "one hundred eleven billion, seven hundred nineteen million, two hundred nine thousand, five hundred fifty-three".