55126401024420 has 384 divisors, whose sum is σ = 195456898990080. Its totient is φ = 12768094056960.

The previous prime is 55126401024377. The next prime is 55126401024421. The reversal of 55126401024420 is 2442010462155.

55126401024420 is a `hidden beast` number, since 5 + 5 + 1 + 2 + 6 + 401 + 0 + 244 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (55126401024421) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 117669282 + ... + 118136838.

It is an arithmetic number, because the mean of its divisors is an integer number (509002341120).

Almost surely, 2^{55126401024420} 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 55126401024420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97728449495040).

55126401024420 is an abundant number, since it is smaller than the sum of its proper divisors (140330497965660).

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

55126401024420 is a wasteful number, since it uses less digits than its factorization.

55126401024420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468472 (or 468464 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 55126401024420 its reverse (2442010462155), we get a palindrome (57568411486575).

The spelling of 55126401024420 in words is "fifty-five trillion, one hundred twenty-six billion, four hundred one million, twenty-four thousand, four hundred twenty".