53621232343321 has 4 divisors (see below), whose sum is σ = 53621534063872. Its totient is φ = 53620930622772.

The previous prime is 53621232343271. The next prime is 53621232343351. The reversal of 53621232343321 is 12334323212635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53621232343321 - 2²⁵ = 53621198788889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53621232343351) 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, 150593541 + ... + 150949186.

It is an arithmetic number, because the mean of its divisors is an integer number (13405383515968).

Almost surely, 2^{53621232343321} is an apocalyptic number.

It is an amenable number.

53621232343321 is a deficient number, since it is larger than the sum of its proper divisors (301720551).

53621232343321 is a wasteful number, since it uses less digits than its factorization.

53621232343321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301720550.

The product of its digits is 466560, while the sum is 40.

Adding to 53621232343321 its reverse (12334323212635), we get a palindrome (65955555555956).

The spelling of 53621232343321 in words is "fifty-three trillion, six hundred twenty-one billion, two hundred thirty-two million, three hundred forty-three thousand, three hundred twenty-one".