2156110065530 has 8 divisors (see below), whose sum is σ = 3880998117972. Its totient is φ = 862444026208.

The previous prime is 2156110065503. The next prime is 2156110065533. The reversal of 2156110065530 is 355600116512.

It can be written as a sum of positive squares in 2 ways, for example, as 1976692590601 + 179417474929 = 1405949^2 + 423577^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2156110065530² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2156110065533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107805503267 + ... + 107805503286.

Almost surely, 2^{2156110065530} is an apocalyptic number.

2156110065530 is a deficient number, since it is larger than the sum of its proper divisors (1724888052442).

2156110065530 is a wasteful number, since it uses less digits than its factorization.

2156110065530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215611006560.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 2156110065530 in words is "two trillion, one hundred fifty-six billion, one hundred ten million, sixty-five thousand, five hundred thirty".