53121604543 has 16 divisors (see below), whose sum is σ = 62861590080. Its totient is φ = 43922301696.

The previous prime is 53121604519. The next prime is 53121604567. The reversal of 53121604543 is 34540612135.

It is an interprime number because it is at equal distance from previous prime (53121604519) and next prime (53121604567).

It is not a de Polignac number, because 53121604543 - 2⁹ = 53121604031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53121604499 and 53121604508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53121604583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102171 + ... + 341587.

It is an arithmetic number, because the mean of its divisors is an integer number (3928849380).

Almost surely, 2^53121604543 is an apocalyptic number.

53121604543 is a deficient number, since it is larger than the sum of its proper divisors (9739985537).

53121604543 is a wasteful number, since it uses less digits than its factorization.

53121604543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240546.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 53121604543 in words is "fifty-three billion, one hundred twenty-one million, six hundred four thousand, five hundred forty-three".