55154111254120 has 128 divisors (see below), whose sum is σ = 127382871686400. Its totient is φ = 21485816580096.

The previous prime is 55154111254093. The next prime is 55154111254139. The reversal of 55154111254120 is 2145211145155.

It is a super-3 number, since 3×55154111254120³ (a number of 42 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55154111254120.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133292269 + ... + 133705411.

It is an arithmetic number, because the mean of its divisors is an integer number (995178685050).

Almost surely, 2^{55154111254120} 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 55154111254120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63691435843200).

55154111254120 is an abundant number, since it is smaller than the sum of its proper divisors (72228760432280).

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

55154111254120 is a wasteful number, since it uses less digits than its factorization.

55154111254120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413787 (or 413783 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 37.

Adding to 55154111254120 its reverse (2145211145155), we get a palindrome (57299322399275).

The spelling of 55154111254120 in words is "fifty-five trillion, one hundred fifty-four billion, one hundred eleven million, two hundred fifty-four thousand, one hundred twenty".