111355577779 has 8 divisors (see below), whose sum is σ = 112403530800. Its totient is φ = 110311633056.

The previous prime is 111355577737. The next prime is 111355577813. The reversal of 111355577779 is 977775553111.

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

It is a cyclic number.

It is not a de Polignac number, because 111355577779 - 2⁷ = 111355577651 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111355577719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946237 + ... + 1057390.

It is an arithmetic number, because the mean of its divisors is an integer number (14050441350).

Almost surely, 2^111355577779 is an apocalyptic number.

111355577779 is a deficient number, since it is larger than the sum of its proper divisors (1047953021).

111355577779 is a wasteful number, since it uses less digits than its factorization.

111355577779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004149.

The product of its digits is 8103375, while the sum is 58.

The spelling of 111355577779 in words is "one hundred eleven billion, three hundred fifty-five million, five hundred seventy-seven thousand, seven hundred seventy-nine".