65121712101053 has 4 divisors (see below), whose sum is σ = 65123116207548. Its totient is φ = 65120307994560.

The previous prime is 65121712101041. The next prime is 65121712101059. The reversal of 65121712101053 is 35010121712156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55521022245049 + 9600689856004 = 7451243^2 + 3098498^2 .

It is a cyclic number.

It is not a de Polignac number, because 65121712101053 - 2¹⁶ = 65121712035517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65121712101059) 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, 701983676 + ... + 702076437.

It is an arithmetic number, because the mean of its divisors is an integer number (16280779051887).

Almost surely, 2^{65121712101053} is an apocalyptic number.

It is an amenable number.

65121712101053 is a deficient number, since it is larger than the sum of its proper divisors (1404106495).

65121712101053 is a wasteful number, since it uses less digits than its factorization.

65121712101053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404106494.

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 65121712101053 in words is "sixty-five trillion, one hundred twenty-one billion, seven hundred twelve million, one hundred one thousand, fifty-three".