11112344556840 has 128 divisors (see below), whose sum is σ = 38236024396800. Its totient is φ = 2867701812480.

The previous prime is 11112344556787. The next prime is 11112344556869. The reversal of 11112344556840 is 4865544321111.

11112344556840 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 2 + 3 + 4 + 45 + 568 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165921487 + ... + 165988446.

It is an arithmetic number, because the mean of its divisors is an integer number (298718940600).

Almost surely, 2^{11112344556840} is an apocalyptic number.

11112344556840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112344556840 is an abundant number, since it is smaller than the sum of its proper divisors (27123679839960).

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

11112344556840 is a wasteful number, since it uses less digits than its factorization.

11112344556840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331909984 (or 331909974 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

Adding to 11112344556840 its reverse (4865544321111), we get a palindrome (15977888877951).

The spelling of 11112344556840 in words is "eleven trillion, one hundred twelve billion, three hundred forty-four million, five hundred fifty-six thousand, eight hundred forty".