545671278578 has 8 divisors (see below), whose sum is σ = 840628726572. Its totient is φ = 265461703056.

The previous prime is 545671278569. The next prime is 545671278583. The reversal of 545671278578 is 875872176545.

It can be written as a sum of positive squares in 2 ways, for example, as 449641325809 + 96029952769 = 670553^2 + 309887^2 .

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

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, 3686968025 + ... + 3686968172.

Almost surely, 2^545671278578 is an apocalyptic number.

545671278578 is a deficient number, since it is larger than the sum of its proper divisors (294957447994).

545671278578 is a wasteful number, since it uses less digits than its factorization.

545671278578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7373936236.

The product of its digits is 131712000, while the sum is 65.

The spelling of 545671278578 in words is "five hundred forty-five billion, six hundred seventy-one million, two hundred seventy-eight thousand, five hundred seventy-eight".