55136254848 has 32 divisors (see below), whose sum is σ = 146455677960. Its totient is φ = 18378751488.

The previous prime is 55136254847. The next prime is 55136254889. The reversal of 55136254848 is 84845263155.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 55136254848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55136254847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71791615 + ... + 71792382.

Almost surely, 2^55136254848 is an apocalyptic number.

It is an amenable number.

55136254848 is an abundant number, since it is smaller than the sum of its proper divisors (91319423112).

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

55136254848 is a wasteful number, since it uses less digits than its factorization.

55136254848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143584014 (or 143584002 counting only the distinct ones).

The product of its digits is 4608000, while the sum is 51.

The spelling of 55136254848 in words is "fifty-five billion, one hundred thirty-six million, two hundred fifty-four thousand, eight hundred forty-eight".