2109287228139 has 48 divisors (see below), whose sum is σ = 3769476931584. Its totient is φ = 1106765899200.

The previous prime is 2109287228131. The next prime is 2109287228141. The reversal of 2109287228139 is 9318227829012.

2109287228139 is a `hidden beast` number, since 2 + 1 + 0 + 9 + 287 + 228 + 139 = 666.

It is not a de Polignac number, because 2109287228139 - 2³ = 2109287228131 is a prime.

It is a super-2 number, since 2×2109287228139² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2109287228131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6585567 + ... + 6898424.

It is an arithmetic number, because the mean of its divisors is an integer number (78530769408).

Almost surely, 2^{2109287228139} is an apocalyptic number.

2109287228139 is a deficient number, since it is larger than the sum of its proper divisors (1660189703445).

2109287228139 is a wasteful number, since it uses less digits than its factorization.

2109287228139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13484208 (or 13484205 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 2109287228139 in words is "two trillion, one hundred nine billion, two hundred eighty-seven million, two hundred twenty-eight thousand, one hundred thirty-nine".