55808392644 has 27 divisors (see below), whose sum is σ = 141074797773. Its totient is φ = 18602325072.

The previous prime is 55808392639. The next prime is 55808392681. The reversal of 55808392644 is 44629380855.

The square root of 55808392644 is 236238.

It is a perfect power (a square), and thus also a powerful number.

55808392644 is a `hidden beast` number, since 5 + 580 + 8 + 39 + 26 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54854324100 + 954068544 = 234210^2 + 30888^2 .

It is a super-2 number, since 2×55808392644² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1397742 + ... + 1437114.

Almost surely, 2^55808392644 is an apocalyptic number.

55808392644 is the 236238-th square number.

It is an amenable number.

55808392644 is an abundant number, since it is smaller than the sum of its proper divisors (85266405129).

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

55808392644 is an frugal number, since it uses more digits than its factorization.

55808392644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78756 (or 39378 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 55808392644 in words is "fifty-five billion, eight hundred eight million, three hundred ninety-two thousand, six hundred forty-four".