2106439520138 has 16 divisors (see below), whose sum is σ = 3440645316000. Its totient is φ = 963380687472.

The previous prime is 2106439520131. The next prime is 2106439520197. The reversal of 2106439520138 is 8310259346012.

It is not an unprimeable number, because it can be changed into a prime (2106439520131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955733708 + ... + 955735911.

It is an arithmetic number, because the mean of its divisors is an integer number (215040332250).

Almost surely, 2^{2106439520138} is an apocalyptic number.

2106439520138 is a deficient number, since it is larger than the sum of its proper divisors (1334205795862).

2106439520138 is a wasteful number, since it uses less digits than its factorization.

2106439520138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911469669.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 2106439520138 in words is "two trillion, one hundred six billion, four hundred thirty-nine million, five hundred twenty thousand, one hundred thirty-eight".