55443462064421 has 8 divisors (see below), whose sum is σ = 59100292675200. Its totient is φ = 51860506819680.

The previous prime is 55443462064387. The next prime is 55443462064453. The reversal of 55443462064421 is 12446026434455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55443462064421 - 2⁴² = 51045415553317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55443462064421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55443462064481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18468839960 + ... + 18468842961.

It is an arithmetic number, because the mean of its divisors is an integer number (7387536584400).

Almost surely, 2^{55443462064421} is an apocalyptic number.

It is an amenable number.

55443462064421 is a deficient number, since it is larger than the sum of its proper divisors (3656830610779).

55443462064421 is a wasteful number, since it uses less digits than its factorization.

55443462064421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36937683019.

The product of its (nonzero) digits is 11059200, while the sum is 50.

Adding to 55443462064421 its reverse (12446026434455), we get a palindrome (67889488498876).

The spelling of 55443462064421 in words is "fifty-five trillion, four hundred forty-three billion, four hundred sixty-two million, sixty-four thousand, four hundred twenty-one".