2138683703753 has 4 divisors (see below), whose sum is σ = 2139198681108. Its totient is φ = 2138168726400.

The previous prime is 2138683703713. The next prime is 2138683703791. The reversal of 2138683703753 is 3573073868312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124759423369 + 2013924280384 = 353213^2 + 1419128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2138683703753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138683703713) 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, 257482448 + ... + 257490753.

It is an arithmetic number, because the mean of its divisors is an integer number (534799670277).

Almost surely, 2^{2138683703753} is an apocalyptic number.

It is an amenable number.

2138683703753 is a deficient number, since it is larger than the sum of its proper divisors (514977355).

2138683703753 is an equidigital number, since it uses as much as digits as its factorization.

2138683703753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514977354.

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 2138683703753 in words is "two trillion, one hundred thirty-eight billion, six hundred eighty-three million, seven hundred three thousand, seven hundred fifty-three".