55161546500 has 48 divisors (see below), whose sum is σ = 120636647040. Its totient is φ = 22034613600.

The previous prime is 55161546487. The next prime is 55161546523. The reversal of 55161546500 is 564516155.

It is a happy number.

55161546500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294857 + ... + 444143.

It is an arithmetic number, because the mean of its divisors is an integer number (2513263480).

Almost surely, 2^55161546500 is an apocalyptic number.

55161546500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55161546500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60318323520).

55161546500 is an abundant number, since it is smaller than the sum of its proper divisors (65475100540).

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

55161546500 is a wasteful number, since it uses less digits than its factorization.

55161546500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150045 (or 150033 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 55161546500 in words is "fifty-five billion, one hundred sixty-one million, five hundred forty-six thousand, five hundred".