65521725620727 has 8 divisors (see below), whose sum is σ = 87374013191680. Its totient is φ = 43675294231800.

The previous prime is 65521725620713. The next prime is 65521725620731. The reversal of 65521725620727 is 72702652712556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65521725620727 - 2⁷ = 65521725620599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65521725620777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1464019399 + ... + 1464064152.

It is an arithmetic number, because the mean of its divisors is an integer number (10921751648960).

Almost surely, 2^{65521725620727} is an apocalyptic number.

65521725620727 is a deficient number, since it is larger than the sum of its proper divisors (21852287570953).

65521725620727 is a wasteful number, since it uses less digits than its factorization.

65521725620727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928091013.

The product of its (nonzero) digits is 24696000, while the sum is 57.

The spelling of 65521725620727 in words is "sixty-five trillion, five hundred twenty-one billion, seven hundred twenty-five million, six hundred twenty thousand, seven hundred twenty-seven".