728114128799 has 4 divisors (see below), whose sum is σ = 730440372336. Its totient is φ = 725787885264.

The previous prime is 728114128787. The next prime is 728114128829. The reversal of 728114128799 is 997821411827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997821411827 = 96431 ⋅10347517.

It is a cyclic number.

It is not a de Polignac number, because 728114128799 - 2²⁰ = 728113080223 is a prime.

It is a super-2 number, since 2×728114128799² (a number of 25 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 (728114128499) 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, 1163121299 + ... + 1163121924.

It is an arithmetic number, because the mean of its divisors is an integer number (182610093084).

Almost surely, 2^728114128799 is an apocalyptic number.

728114128799 is a deficient number, since it is larger than the sum of its proper divisors (2326243537).

728114128799 is a wasteful number, since it uses less digits than its factorization.

728114128799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326243536.

The product of its digits is 4064256, while the sum is 59.

The spelling of 728114128799 in words is "seven hundred twenty-eight billion, one hundred fourteen million, one hundred twenty-eight thousand, seven hundred ninety-nine".