55536420032 has 56 divisors (see below), whose sum is σ = 111374505216. Its totient is φ = 27474041088.

The previous prime is 55536420019. The next prime is 55536420053. The reversal of 55536420032 is 23002463555.

It is a junction number, because it is equal to n+sod(n) for n = 55536419974 and 55536420001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9008183 + ... + 9014345.

Almost surely, 2^55536420032 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 55536420032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55687252608).

55536420032 is an abundant number, since it is smaller than the sum of its proper divisors (55838085184).

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

55536420032 is a wasteful number, since it uses less digits than its factorization.

55536420032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7645 (or 7635 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 55536420032 its reverse (23002463555), we get a palindrome (78538883587).

The spelling of 55536420032 in words is "fifty-five billion, five hundred thirty-six million, four hundred twenty thousand, thirty-two".