2102861355 has 16 divisors (see below), whose sum is σ = 3845232384. Its totient is φ = 961308000.

The previous prime is 2102861353. The next prime is 2102861399. The reversal of 2102861355 is 5531682012.

It is not a de Polignac number, because 2102861355 - 2¹ = 2102861353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2102861353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10013521 + ... + 10013730.

It is an arithmetic number, because the mean of its divisors is an integer number (240327024).

Almost surely, 2^2102861355 is an apocalyptic number.

2102861355 is a deficient number, since it is larger than the sum of its proper divisors (1742371029).

2102861355 is a wasteful number, since it uses less digits than its factorization.

2102861355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20027266.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 2102861355 is about 45856.9662646800. The cubic root of 2102861355 is about 1281.1605187400.

The spelling of 2102861355 in words is "two billion, one hundred two million, eight hundred sixty-one thousand, three hundred fifty-five".