111780779620 has 48 divisors (see below), whose sum is σ = 239793136128. Its totient is φ = 43750209920.

The previous prime is 111780779597. The next prime is 111780779641. The reversal of 111780779620 is 26977087111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4566534 + ... + 4590946.

It is an arithmetic number, because the mean of its divisors is an integer number (4995690336).

Almost surely, 2^111780779620 is an apocalyptic number.

111780779620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111780779620 is an abundant number, since it is smaller than the sum of its proper divisors (128012356508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111780779620 is a wasteful number, since it uses less digits than its factorization.

111780779620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29340 (or 29338 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 49.

The spelling of 111780779620 in words is "one hundred eleven billion, seven hundred eighty million, seven hundred seventy-nine thousand, six hundred twenty".