55462321420 has 192 divisors, whose sum is σ = 133514873856. Its totient is φ = 19174302720.

The previous prime is 55462321367. The next prime is 55462321423. The reversal of 55462321420 is 2412326455.

It is not an unprimeable number, because it can be changed into a prime (55462321423) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69588462 + ... + 69589258.

It is an arithmetic number, because the mean of its divisors is an integer number (695389968).

Almost surely, 2^55462321420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55462321420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66757436928).

55462321420 is an abundant number, since it is smaller than the sum of its proper divisors (78052552436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55462321420 is a wasteful number, since it uses less digits than its factorization.

55462321420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 55462321420 its reverse (2412326455), we get a palindrome (57874647875).

The spelling of 55462321420 in words is "fifty-five billion, four hundred sixty-two million, three hundred twenty-one thousand, four hundred twenty".