111100640665040 has 80 divisors (see below), whose sum is σ = 278226422192208. Its totient is φ = 41014768877568.

The previous prime is 111100640664983. The next prime is 111100640665061. The reversal of 111100640665040 is 40566046001111.

It can be written as a sum of positive squares in 8 ways, for example, as 11685622643776 + 99415018021264 = 3418424^2 + 9970708^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3028367 + ... + 15210926.

Almost surely, 2^{111100640665040} is an apocalyptic number.

111100640665040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111100640665040 is an abundant number, since it is smaller than the sum of its proper divisors (167125781527168).

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

111100640665040 is a wasteful number, since it uses less digits than its factorization.

111100640665040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18245176 (or 18245170 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 111100640665040 its reverse (40566046001111), we get a palindrome (151666686666151).

The spelling of 111100640665040 in words is "one hundred eleven trillion, one hundred billion, six hundred forty million, six hundred sixty-five thousand, forty".