11112578280 has 96 divisors (see below), whose sum is σ = 36130498560. Its totient is φ = 2962154880.

The previous prime is 11112578201. The next prime is 11112578299. The reversal of 11112578280 is 8287521111.

11112578280 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 2 + 578 + 2 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1216209 + ... + 1225311.

It is an arithmetic number, because the mean of its divisors is an integer number (376359360).

Almost surely, 2^11112578280 is an apocalyptic number.

11112578280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112578280 is an abundant number, since it is smaller than the sum of its proper divisors (25017920280).

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

11112578280 is a wasteful number, since it uses less digits than its factorization.

11112578280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12511 (or 12504 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 36.

The spelling of 11112578280 in words is "eleven billion, one hundred twelve million, five hundred seventy-eight thousand, two hundred eighty".