55580773646 has 8 divisors (see below), whose sum is σ = 83379672120. Its totient is φ = 27787549608.

The previous prime is 55580773639. The next prime is 55580773727. The reversal of 55580773646 is 64637708555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55580773591 and 55580773600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1394036 + ... + 1433351.

It is an arithmetic number, because the mean of its divisors is an integer number (10422459015).

Almost surely, 2^55580773646 is an apocalyptic number.

55580773646 is a deficient number, since it is larger than the sum of its proper divisors (27798898474).

55580773646 is a wasteful number, since it uses less digits than its factorization.

55580773646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837218.

The product of its (nonzero) digits is 21168000, while the sum is 56.

The spelling of 55580773646 in words is "fifty-five billion, five hundred eighty million, seven hundred seventy-three thousand, six hundred forty-six".