2115534656 has 28 divisors (see below), whose sum is σ = 4266841860. Its totient is φ = 1040424960.

The previous prime is 2115534647. The next prime is 2115534661. The reversal of 2115534656 is 6564355112.

It can be written as a sum of positive squares in 2 ways, for example, as 158357056 + 1957177600 = 12584^2 + 44240^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267041 + ... + 274848.

Almost surely, 2^2115534656 is an apocalyptic number.

It is an amenable number.

2115534656 is an abundant number, since it is smaller than the sum of its proper divisors (2151307204).

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

2115534656 is an equidigital number, since it uses as much as digits as its factorization.

2115534656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541962 (or 541952 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

The square root of 2115534656 is about 45994.9416349233. The cubic root of 2115534656 is about 1283.7290862588.

Adding to 2115534656 its reverse (6564355112), we get a palindrome (8679889768).

The spelling of 2115534656 in words is "two billion, one hundred fifteen million, five hundred thirty-four thousand, six hundred fifty-six".