111012660640 has 96 divisors (see below), whose sum is σ = 301467277440. Its totient is φ = 37841409024.

The previous prime is 111012660631. The next prime is 111012660679. The reversal of 111012660640 is 46066210111.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 111012660599 and 111012660608.

It is an unprimeable number.

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, 92710 + ... + 480229.

It is an arithmetic number, because the mean of its divisors is an integer number (3140284140).

Almost surely, 2^111012660640 is an apocalyptic number.

111012660640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012660640 is an abundant number, since it is smaller than the sum of its proper divisors (190454616800).

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

111012660640 is a wasteful number, since it uses less digits than its factorization.

111012660640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573134 (or 573126 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 111012660640 its reverse (46066210111), we get a palindrome (157078870751).

The spelling of 111012660640 in words is "one hundred eleven billion, twelve million, six hundred sixty thousand, six hundred forty".