55489148153856 has 260 divisors, whose sum is σ = 166954828394200. Its totient is φ = 18363299954688.

The previous prime is 55489148153779. The next prime is 55489148153869. The reversal of 55489148153856 is 65835184198455.

55489148153856 is a `hidden beast` number, since 5 + 5 + 4 + 8 + 9 + 1 + 4 + 81 + 538 + 5 + 6 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45515250 + ... + 46718478.

Almost surely, 2^{55489148153856} 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 55489148153856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83477414197100).

55489148153856 is an abundant number, since it is smaller than the sum of its proper divisors (111465680240344).

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

55489148153856 is a wasteful number, since it uses less digits than its factorization.

55489148153856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203404 (or 1203373 counting only the distinct ones).

The product of its digits is 829440000, while the sum is 72.

The spelling of 55489148153856 in words is "fifty-five trillion, four hundred eighty-nine billion, one hundred forty-eight million, one hundred fifty-three thousand, eight hundred fifty-six".