53503856611573 has 2 divisors, whose sum is σ = 53503856611574. Its totient is φ = 53503856611572.

The previous prime is 53503856611553. The next prime is 53503856611589. The reversal of 53503856611573 is 37511665830535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50584057389009 + 2919799222564 = 7112247^2 + 1708742^2 .

It is a cyclic number.

It is not a de Polignac number, because 53503856611573 - 2²⁵ = 53503823057141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53503856611553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26751928305786 + 26751928305787.

It is an arithmetic number, because the mean of its divisors is an integer number (26751928305787).

Almost surely, 2^{53503856611573} is an apocalyptic number.

It is an amenable number.

53503856611573 is a deficient number, since it is larger than the sum of its proper divisors (1).

53503856611573 is an equidigital number, since it uses as much as digits as its factorization.

53503856611573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020000, while the sum is 58.

The spelling of 53503856611573 in words is "fifty-three trillion, five hundred three billion, eight hundred fifty-six million, six hundred eleven thousand, five hundred seventy-three".