54780924389 has 4 divisors (see below), whose sum is σ = 58003331724. Its totient is φ = 51558517056.

The previous prime is 54780924361. The next prime is 54780924403. The reversal of 54780924389 is 98342908745.

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 51481341025 + 3299583364 = 226895^2 + 57442^2 .

It is a cyclic number.

It is not a de Polignac number, because 54780924389 - 2²⁴ = 54764147173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54780924349) 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, 1611203642 + ... + 1611203675.

It is an arithmetic number, because the mean of its divisors is an integer number (14500832931).

Almost surely, 2^54780924389 is an apocalyptic number.

It is an amenable number.

54780924389 is a deficient number, since it is larger than the sum of its proper divisors (3222407335).

54780924389 is a wasteful number, since it uses less digits than its factorization.

54780924389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222407334.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 54780924389 in words is "fifty-four billion, seven hundred eighty million, nine hundred twenty-four thousand, three hundred eighty-nine".