53820630013 has 4 divisors (see below), whose sum is σ = 55133328348. Its totient is φ = 52507931680.

The previous prime is 53820629969. The next prime is 53820630047. The reversal of 53820630013 is 31003602835.

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 14601580569 + 39219049444 = 120837^2 + 198038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53820630013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53823630013) 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 3 ways as a sum of consecutive naturals, for example, 656349106 + ... + 656349187.

It is an arithmetic number, because the mean of its divisors is an integer number (13783332087).

Almost surely, 2^53820630013 is an apocalyptic number.

It is an amenable number.

53820630013 is a deficient number, since it is larger than the sum of its proper divisors (1312698335).

53820630013 is a wasteful number, since it uses less digits than its factorization.

53820630013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312698334.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 53820630013 in words is "fifty-three billion, eight hundred twenty million, six hundred thirty thousand, thirteen".