55446498018 has 18 divisors (see below), whose sum is σ = 120136243617. Its totient is φ = 18481833000.

The previous prime is 55446498017. The next prime is 55446498047. The reversal of 55446498018 is 81089464455.

55446498018 is a `hidden beast` number, since 5 + 544 + 6 + 4 + 9 + 80 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 48963510729 + 6482987289 = 221277^2 + 80517^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=166503.

It is not an unprimeable number, because it can be changed into a prime (55446498017) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 971268 + ... + 1026768.

Almost surely, 2^55446498018 is an apocalyptic number.

55446498018 is an abundant number, since it is smaller than the sum of its proper divisors (64689745599).

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

55446498018 is an frugal number, since it uses more digits than its factorization.

55446498018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111010 (or 55506 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 55446498018 in words is "fifty-five billion, four hundred forty-six million, four hundred ninety-eight thousand, eighteen".