2156529706 has 16 divisors (see below), whose sum is σ = 3308794920. Its totient is φ = 1053823680.

The previous prime is 2156529689. The next prime is 2156529721. The reversal of 2156529706 is 6079256512.

It can be written as a sum of positive squares in 4 ways, for example, as 1170255681 + 986274025 = 34209^2 + 31405^2 .

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, 37141 + ... + 75448.

Almost surely, 2^2156529706 is an apocalyptic number.

2156529706 is a deficient number, since it is larger than the sum of its proper divisors (1152265214).

2156529706 is a wasteful number, since it uses less digits than its factorization.

2156529706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112809.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 2156529706 is about 46438.4507278182. The cubic root of 2156529706 is about 1291.9681724148.

The spelling of 2156529706 in words is "two billion, one hundred fifty-six million, five hundred twenty-nine thousand, seven hundred six".