758725121721 has 16 divisors (see below), whose sum is σ = 1224161541504. Its totient is φ = 408053846784.

The previous prime is 758725121711. The next prime is 758725121743. The reversal of 758725121721 is 127121527857.

758725121721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 758725121721 - 2⁶ = 758725121657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (758725121711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062639870 + ... + 1062640583.

It is an arithmetic number, because the mean of its divisors is an integer number (76510096344).

Almost surely, 2^758725121721 is an apocalyptic number.

It is an amenable number.

758725121721 is a deficient number, since it is larger than the sum of its proper divisors (465436419783).

758725121721 is a wasteful number, since it uses less digits than its factorization.

758725121721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125280480.

The product of its digits is 548800, while the sum is 48.

The spelling of 758725121721 in words is "seven hundred fifty-eight billion, seven hundred twenty-five million, one hundred twenty-one thousand, seven hundred twenty-one".