751728882529 has 3 divisors (see below), whose sum is σ = 751729749553. Its totient is φ = 751728015506.

The previous prime is 751728882503. The next prime is 751728882533. The reversal of 751728882529 is 925288827157.

The square root of 751728882529 is 867023.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 925288827157 = 470993 ⋅1964549.

It is not a de Polignac number, because 751728882529 - 2⁵ = 751728882497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (751728882329) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 433512 + ... + 1300534.

Almost surely, 2^751728882529 is an apocalyptic number.

751728882529 is the 867023-rd square number.

751728882529 is the 433512-nd centered octagonal number.

It is an amenable number.

751728882529 is a deficient number, since it is larger than the sum of its proper divisors (867024).

751728882529 is an frugal number, since it uses more digits than its factorization.

751728882529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734046 (or 867023 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 64.

Multiplying 751728882529 by its sum of digits (64), we get a square (48110648481856 = 6936184²).

The spelling of 751728882529 in words is "seven hundred fifty-one billion, seven hundred twenty-eight million, eight hundred eighty-two thousand, five hundred twenty-nine".