55558428534 has 96 divisors (see below), whose sum is σ = 139250741760. Its totient is φ = 15680624256.

The previous prime is 55558428529. The next prime is 55558428539. The reversal of 55558428534 is 43582485555.

55558428534 is a `hidden beast` number, since 5 + 5 + 5 + 5 + 84 + 28 + 534 = 666.

It is an interprime number because it is at equal distance from previous prime (55558428529) and next prime (55558428539).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55558428539) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18019357 + ... + 18022439.

It is an arithmetic number, because the mean of its divisors is an integer number (1450528560).

Almost surely, 2^55558428534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55558428534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69625370880).

55558428534 is an abundant number, since it is smaller than the sum of its proper divisors (83692313226).

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

55558428534 is a wasteful number, since it uses less digits than its factorization.

55558428534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794 (or 4791 counting only the distinct ones).

The product of its digits is 19200000, while the sum is 54.

The spelling of 55558428534 in words is "fifty-five billion, five hundred fifty-eight million, four hundred twenty-eight thousand, five hundred thirty-four".