65234196052921 has 6 divisors (see below), whose sum is σ = 75884677041210. Its totient is φ = 55915025188176.

The previous prime is 65234196052897. The next prime is 65234196052967. The reversal of 65234196052921 is 12925069143256.

It can be written as a sum of positive squares in only one way, i.e., 64711808253225 + 522387799696 = 8044365^2 + 722764^2 .

It is not a de Polignac number, because 65234196052921 - 2⁷ = 65234196052793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65234196050921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 665655061716 + ... + 665655061813.

It is an arithmetic number, because the mean of its divisors is an integer number (12647446173535).

Almost surely, 2^{65234196052921} is an apocalyptic number.

It is an amenable number.

65234196052921 is a deficient number, since it is larger than the sum of its proper divisors (10650480988289).

65234196052921 is a wasteful number, since it uses less digits than its factorization.

65234196052921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331310123543 (or 1331310123536 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 65234196052921 in words is "sixty-five trillion, two hundred thirty-four billion, one hundred ninety-six million, fifty-two thousand, nine hundred twenty-one".