53416934898721 has 3 divisors (see below), whose sum is σ = 53416942207411. Its totient is φ = 53416927590032.

The previous prime is 53416934898697. The next prime is 53416934898773. The reversal of 53416934898721 is 12789843961435.

The square root of 53416934898721 is 7308689.

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.

It can be written as a sum of positive squares in only one way, i.e., 5016529337121 + 48400405561600 = 2239761^2 + 6957040^2 .

It is not a de Polignac number, because 53416934898721 - 2¹⁷ = 53416934767649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53416934898221) 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, 3654345 + ... + 10963033.

Almost surely, 2^{53416934898721} is an apocalyptic number.

53416934898721 is the 7308689-th square number.

53416934898721 is the 3654345-th centered octagonal number.

It is an amenable number.

53416934898721 is a deficient number, since it is larger than the sum of its proper divisors (7308690).

53416934898721 is an frugal number, since it uses more digits than its factorization.

53416934898721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14617378 (or 7308689 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 70.

The spelling of 53416934898721 in words is "fifty-three trillion, four hundred sixteen billion, nine hundred thirty-four million, eight hundred ninety-eight thousand, seven hundred twenty-one".