55577578305 has 16 divisors (see below), whose sum is σ = 88946023680. Its totient is φ = 29634075648.

The previous prime is 55577578279. The next prime is 55577578333. The reversal of 55577578305 is 50387577555.

It is a de Polignac number, because none of the positive numbers 2^k-55577578305 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392992 + ... + 515361.

It is an arithmetic number, because the mean of its divisors is an integer number (5559126480).

Almost surely, 2^55577578305 is an apocalyptic number.

It is an amenable number.

55577578305 is a deficient number, since it is larger than the sum of its proper divisors (33368445375).

55577578305 is a wasteful number, since it uses less digits than its factorization.

55577578305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912440.

The product of its (nonzero) digits is 25725000, while the sum is 57.

The spelling of 55577578305 in words is "fifty-five billion, five hundred seventy-seven million, five hundred seventy-eight thousand, three hundred five".