5478154802089 has 4 divisors (see below), whose sum is σ = 5491548824020. Its totient is φ = 5464760780160.

The previous prime is 5478154802077. The next prime is 5478154802111. The reversal of 5478154802089 is 9802084518745.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4926588646464 + 551566155625 = 2219592^2 + 742675^2 .

It is a cyclic number.

It is not a de Polignac number, because 5478154802089 - 2³³ = 5469564867497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5478154802059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6697010352 + ... + 6697011169.

It is an arithmetic number, because the mean of its divisors is an integer number (1372887206005).

Almost surely, 2^{5478154802089} is an apocalyptic number.

It is an amenable number.

5478154802089 is a deficient number, since it is larger than the sum of its proper divisors (13394021931).

5478154802089 is a wasteful number, since it uses less digits than its factorization.

5478154802089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13394021930.

The product of its (nonzero) digits is 25804800, while the sum is 61.

The spelling of 5478154802089 in words is "five trillion, four hundred seventy-eight billion, one hundred fifty-four million, eight hundred two thousand, eighty-nine".