55685655136 has 96 divisors (see below), whose sum is σ = 114368163840. Its totient is φ = 26660275200.

The previous prime is 55685655133. The next prime is 55685655197. The reversal of 55685655136 is 63155658655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55685655133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59429260 + ... + 59430196.

It is an arithmetic number, because the mean of its divisors is an integer number (1191335040).

Almost surely, 2^55685655136 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 55685655136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57184081920).

55685655136 is an abundant number, since it is smaller than the sum of its proper divisors (58682508704).

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

55685655136 is a wasteful number, since it uses less digits than its factorization.

55685655136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548 (or 1540 counting only the distinct ones).

The product of its digits is 16200000, while the sum is 55.

The spelling of 55685655136 in words is "fifty-five billion, six hundred eighty-five million, six hundred fifty-five thousand, one hundred thirty-six".