2138879212512 has 384 divisors, whose sum is σ = 6601280716800. Its totient is φ = 593825734656.

The previous prime is 2138879212427. The next prime is 2138879212571. The reversal of 2138879212512 is 2152129788312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1215962289 + ... + 1215964047.

It is an arithmetic number, because the mean of its divisors is an integer number (17190835200).

Almost surely, 2^{2138879212512} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2138879212512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3300640358400).

2138879212512 is an abundant number, since it is smaller than the sum of its proper divisors (4462401504288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2138879212512 is a wasteful number, since it uses less digits than its factorization.

2138879212512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198 (or 2190 counting only the distinct ones).

The product of its digits is 967680, while the sum is 51.

The spelling of 2138879212512 in words is "two trillion, one hundred thirty-eight billion, eight hundred seventy-nine million, two hundred twelve thousand, five hundred twelve".