53421851898359 has 4 divisors (see below), whose sum is σ = 61053545026704. Its totient is φ = 45790158770016.

The previous prime is 53421851898353. The next prime is 53421851898391. The reversal of 53421851898359 is 95389815812435.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53421851898359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53421851898292 and 53421851898301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53421851898353) 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, 3815846564162 + ... + 3815846564175.

It is an arithmetic number, because the mean of its divisors is an integer number (15263386256676).

Almost surely, 2^{53421851898359} is an apocalyptic number.

53421851898359 is a deficient number, since it is larger than the sum of its proper divisors (7631693128345).

53421851898359 is an equidigital number, since it uses as much as digits as its factorization.

53421851898359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631693128344.

The product of its digits is 373248000, while the sum is 71.

The spelling of 53421851898359 in words is "fifty-three trillion, four hundred twenty-one billion, eight hundred fifty-one million, eight hundred ninety-eight thousand, three hundred fifty-nine".