1111345680 has 40 divisors (see below), whose sum is σ = 3445172352. Its totient is φ = 296358784.

The previous prime is 1111345679. The next prime is 1111345721. The reversal of 1111345680 is 865431111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2315064 + ... + 2315543.

Almost surely, 2^1111345680 is an apocalyptic number.

1111345680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111345680 is an abundant number, since it is smaller than the sum of its proper divisors (2333826672).

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

1111345680 is a wasteful number, since it uses less digits than its factorization.

1111345680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630623 (or 4630617 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 1111345680 is about 33336.8516809851. The cubic root of 1111345680 is about 1035.8170495305.

Adding to 1111345680 its reverse (865431111), we get a palindrome (1976776791).

The spelling of 1111345680 in words is "one billion, one hundred eleven million, three hundred forty-five thousand, six hundred eighty".