2157616105 has 32 divisors (see below), whose sum is σ = 2675988000. Its totient is φ = 1669496832.

The previous prime is 2157616091. The next prime is 2157616133. The reversal of 2157616105 is 5016167512.

It can be written as a sum of positive squares in 16 ways, for example, as 374074281 + 1783541824 = 19341^2 + 42232^2 .

It is a cyclic number.

It is not a de Polignac number, because 2157616105 - 2¹³ = 2157607913 is a prime.

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, 5275141 + ... + 5275549.

It is an arithmetic number, because the mean of its divisors is an integer number (83624625).

Almost surely, 2^2157616105 is an apocalyptic number.

It is an amenable number.

2157616105 is a deficient number, since it is larger than the sum of its proper divisors (518371895).

2157616105 is a wasteful number, since it uses less digits than its factorization.

2157616105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 2157616105 is about 46450.1464475625. The cubic root of 2157616105 is about 1292.1850884004.

The spelling of 2157616105 in words is "two billion, one hundred fifty-seven million, six hundred sixteen thousand, one hundred five".