55158919526880 has 384 divisors, whose sum is σ = 207920021299200. Its totient is φ = 13576710039552.

The previous prime is 55158919526869. The next prime is 55158919526903. The reversal of 55158919526880 is 8862591985155.

It is a happy number.

55158919526880 is a `hidden beast` number, since 5 + 5 + 1 + 5 + 8 + 9 + 19 + 526 + 8 + 80 = 666.

55158919526880 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 55158919526799 and 55158919526808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1604979457 + ... + 1605013823.

It is an arithmetic number, because the mean of its divisors is an integer number (541458388800).

Almost surely, 2^{55158919526880} 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 55158919526880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103960010649600).

55158919526880 is an abundant number, since it is smaller than the sum of its proper divisors (152761101772320).

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

55158919526880 is a wasteful number, since it uses less digits than its factorization.

55158919526880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62983 (or 62969 counting only the distinct ones).

The product of its (nonzero) digits is 311040000, while the sum is 72.

The spelling of 55158919526880 in words is "fifty-five trillion, one hundred fifty-eight billion, nine hundred nineteen million, five hundred twenty-six thousand, eight hundred eighty".