53399553617 has 4 divisors (see below), whose sum is σ = 54701981796. Its totient is φ = 52097125440.

The previous prime is 53399553589. The next prime is 53399553653. The reversal of 53399553617 is 71635599335.

53399553617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12562823056 + 40836730561 = 112084^2 + 202081^2 .

It is a cyclic number.

It is not a de Polignac number, because 53399553617 - 2¹⁰ = 53399552593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53399553667) 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, 651214028 + ... + 651214109.

It is an arithmetic number, because the mean of its divisors is an integer number (13675495449).

Almost surely, 2^53399553617 is an apocalyptic number.

It is an amenable number.

53399553617 is a deficient number, since it is larger than the sum of its proper divisors (1302428179).

53399553617 is a wasteful number, since it uses less digits than its factorization.

53399553617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302428178.

The product of its digits is 11481750, while the sum is 56.

The spelling of 53399553617 in words is "fifty-three billion, three hundred ninety-nine million, five hundred fifty-three thousand, six hundred seventeen".