54128790389 has 2 divisors, whose sum is σ = 54128790390. Its totient is φ = 54128790388.

The previous prime is 54128790379. The next prime is 54128790409. The reversal of 54128790389 is 98309782145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52034172100 + 2094618289 = 228110^2 + 45767^2 .

It is a cyclic number.

It is not a de Polignac number, because 54128790389 - 2²⁰ = 54127741813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54128790379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27064395194 + 27064395195.

It is an arithmetic number, because the mean of its divisors is an integer number (27064395195).

Almost surely, 2^54128790389 is an apocalyptic number.

It is an amenable number.

54128790389 is a deficient number, since it is larger than the sum of its proper divisors (1).

54128790389 is an equidigital number, since it uses as much as digits as its factorization.

54128790389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 54128790389 in words is "fifty-four billion, one hundred twenty-eight million, seven hundred ninety thousand, three hundred eighty-nine".