2112457856 has 16 divisors (see below), whose sum is σ = 4208412390. Its totient is φ = 1056228864.

The previous prime is 2112457813. The next prime is 2112457873. The reversal of 2112457856 is 6587542112.

It can be written as a sum of positive squares in only one way, i.e., 1175118400 + 937339456 = 34280^2 + 30616^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×2112457856² = 8924956386752233472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8251661 + ... + 8251916.

Almost surely, 2^2112457856 is an apocalyptic number.

It is an amenable number.

2112457856 is a deficient number, since it is larger than the sum of its proper divisors (2095954534).

2112457856 is an equidigital number, since it uses as much as digits as its factorization.

2112457856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16503591 (or 16503579 counting only the distinct ones).

The product of its digits is 134400, while the sum is 41.

The square root of 2112457856 is about 45961.4823085592. The cubic root of 2112457856 is about 1283.1064392412.

Adding to 2112457856 its reverse (6587542112), we get a palindrome (8699999968).

The spelling of 2112457856 in words is "two billion, one hundred twelve million, four hundred fifty-seven thousand, eight hundred fifty-six".