55120412453340 has 384 divisors, whose sum is σ = 172885232314368. Its totient is φ = 13034801479680.

The previous prime is 55120412453291. The next prime is 55120412453419. The reversal of 55120412453340 is 4335421402155.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 571402392 + ... + 571498848.

It is an arithmetic number, because the mean of its divisors is an integer number (450221959152).

Almost surely, 2^{55120412453340} 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 55120412453340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86442616157184).

55120412453340 is an abundant number, since it is smaller than the sum of its proper divisors (117764819861028).

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

55120412453340 is a wasteful number, since it uses less digits than its factorization.

55120412453340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96797 (or 96795 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 55120412453340 its reverse (4335421402155), we get a palindrome (59455833855495).

The spelling of 55120412453340 in words is "fifty-five trillion, one hundred twenty billion, four hundred twelve million, four hundred fifty-three thousand, three hundred forty".