2138718734759 has 2 divisors, whose sum is σ = 2138718734760. Its totient is φ = 2138718734758.

The previous prime is 2138718734741. The next prime is 2138718734791. The reversal of 2138718734759 is 9574378178312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2138718734759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2138718734695 and 2138718734704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2138718734059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069359367379 + 1069359367380.

It is an arithmetic number, because the mean of its divisors is an integer number (1069359367380).

Almost surely, 2^{2138718734759} is an apocalyptic number.

2138718734759 is a deficient number, since it is larger than the sum of its proper divisors (1).

2138718734759 is an equidigital number, since it uses as much as digits as its factorization.

2138718734759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71124480, while the sum is 65.

The spelling of 2138718734759 in words is "two trillion, one hundred thirty-eight billion, seven hundred eighteen million, seven hundred thirty-four thousand, seven hundred fifty-nine".