55555678445 has 16 divisors (see below), whose sum is σ = 70629593328. Its totient is φ = 41805742080.

The previous prime is 55555678393. The next prime is 55555678487. The reversal of 55555678445 is 54487655555.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 925498084 + 54630180361 = 30422^2 + 233731^2 .

It is not a de Polignac number, because 55555678445 - 2²² = 55551484141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43604 + ... + 336173.

It is an arithmetic number, because the mean of its divisors is an integer number (4414349583).

Almost surely, 2^55555678445 is an apocalyptic number.

It is an amenable number.

55555678445 is a deficient number, since it is larger than the sum of its proper divisors (15073914883).

55555678445 is a wasteful number, since it uses less digits than its factorization.

55555678445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381520.

The product of its digits is 84000000, while the sum is 59.

The spelling of 55555678445 in words is "fifty-five billion, five hundred fifty-five million, six hundred seventy-eight thousand, four hundred forty-five".