55335245055420 has 384 divisors, whose sum is σ = 175434848676864. Its totient is φ = 12913689600000.

The previous prime is 55335245055353. The next prime is 55335245055443. The reversal of 55335245055420 is 2455054253355.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55335245055420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3874738680 + ... + 3874752960.

It is an arithmetic number, because the mean of its divisors is an integer number (456861585096).

Almost surely, 2^{55335245055420} 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 55335245055420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87717424338432).

55335245055420 is an abundant number, since it is smaller than the sum of its proper divisors (120099603621444).

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

55335245055420 is a wasteful number, since it uses less digits than its factorization.

55335245055420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16013 (or 16011 counting only the distinct ones).

The product of its (nonzero) digits is 9000000, while the sum is 48.

The spelling of 55335245055420 in words is "fifty-five trillion, three hundred thirty-five billion, two hundred forty-five million, fifty-five thousand, four hundred twenty".