2138758914569 has 2 divisors, whose sum is σ = 2138758914570. Its totient is φ = 2138758914568.

The previous prime is 2138758914541. The next prime is 2138758914661. The reversal of 2138758914569 is 9654198578312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2067369487225 + 71389427344 = 1437835^2 + 267188^2 .

It is a cyclic number.

It is not a de Polignac number, because 2138758914569 - 2¹² = 2138758910473 is a prime.

It is a super-2 number, since 2×2138758914569² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2138758914499 and 2138758914508.

It is not a weakly prime, because it can be changed into another prime (2138758914469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069379457284 + 1069379457285.

It is an arithmetic number, because the mean of its divisors is an integer number (1069379457285).

Almost surely, 2^{2138758914569} is an apocalyptic number.

It is an amenable number.

2138758914569 is a deficient number, since it is larger than the sum of its proper divisors (1).

2138758914569 is an equidigital number, since it uses as much as digits as its factorization.

2138758914569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 130636800, while the sum is 68.

The spelling of 2138758914569 in words is "two trillion, one hundred thirty-eight billion, seven hundred fifty-eight million, nine hundred fourteen thousand, five hundred sixty-nine".