55646454618 has 24 divisors (see below), whose sum is σ = 122842175508. Its totient is φ = 18198840192.

The previous prime is 55646454557. The next prime is 55646454631. The reversal of 55646454618 is 81645464655.

55646454618 is a `hidden beast` number, since 5 + 56 + 46 + 4 + 546 + 1 + 8 = 666.

55646454618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 52572528369 + 3073926249 = 229287^2 + 55443^2 .

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29163855 + ... + 29165762.

Almost surely, 2^55646454618 is an apocalyptic number.

55646454618 is an abundant number, since it is smaller than the sum of its proper divisors (67195720890).

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

55646454618 is a wasteful number, since it uses less digits than its factorization.

55646454618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58329678 (or 58329675 counting only the distinct ones).

The product of its digits is 13824000, while the sum is 54.

The spelling of 55646454618 in words is "fifty-five billion, six hundred forty-six million, four hundred fifty-four thousand, six hundred eighteen".