17438052790649 has 4 divisors (see below), whose sum is σ = 17439566653440. Its totient is φ = 17436538927860.

The previous prime is 17438052790577. The next prime is 17438052790663. The reversal of 17438052790649 is 94609725083471.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 17438052790649 - 2¹⁶ = 17438052725113 is a prime.

It is a super-2 number, since 2×17438052790649² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17438052790699) 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, 756914117 + ... + 756937154.

It is an arithmetic number, because the mean of its divisors is an integer number (4359891663360).

It is a 2-persistent number, because it is pandigital, and so is 2⋅17438052790649 = 34876105581298, but 3⋅17438052790649 = 52314158371947 is not.

Almost surely, 2^{17438052790649} is an apocalyptic number.

It is an amenable number.

17438052790649 is a deficient number, since it is larger than the sum of its proper divisors (1513862791).

17438052790649 is a wasteful number, since it uses less digits than its factorization.

17438052790649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513862790.

The product of its (nonzero) digits is 91445760, while the sum is 65.

The spelling of 17438052790649 in words is "seventeen trillion, four hundred thirty-eight billion, fifty-two million, seven hundred ninety thousand, six hundred forty-nine".