128934813930719 has 4 divisors (see below), whose sum is σ = 128945552246544. Its totient is φ = 128924075614896.

The previous prime is 128934813930679. The next prime is 128934813930731. The reversal of 128934813930719 is 917039318439821.

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

It is a cyclic number.

It is not a de Polignac number, because 128934813930719 - 2¹² = 128934813926623 is a prime.

It is a super-2 number, since 2×128934813930719² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128934813930799) 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, 5369139902 + ... + 5369163915.

It is an arithmetic number, because the mean of its divisors is an integer number (32236388061636).

Almost surely, 2^{128934813930719} is an apocalyptic number.

128934813930719 is a deficient number, since it is larger than the sum of its proper divisors (10738315825).

128934813930719 is a wasteful number, since it uses less digits than its factorization.

128934813930719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10738315824.

The product of its (nonzero) digits is 70543872, while the sum is 68.

The spelling of 128934813930719 in words is "one hundred twenty-eight trillion, nine hundred thirty-four billion, eight hundred thirteen million, nine hundred thirty thousand, seven hundred nineteen".