54406987589 has 2 divisors, whose sum is σ = 54406987590. Its totient is φ = 54406987588.

The previous prime is 54406987571. The next prime is 54406987619. The reversal of 54406987589 is 98578960445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46237900900 + 8169086689 = 215030^2 + 90383^2 .

It is a cyclic number.

It is not a de Polignac number, because 54406987589 - 2²⁰ = 54405939013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54406987189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27203493794 + 27203493795.

It is an arithmetic number, because the mean of its divisors is an integer number (27203493795).

Almost surely, 2^54406987589 is an apocalyptic number.

It is an amenable number.

54406987589 is a deficient number, since it is larger than the sum of its proper divisors (1).

54406987589 is an equidigital number, since it uses as much as digits as its factorization.

54406987589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87091200, while the sum is 65.

The spelling of 54406987589 in words is "fifty-four billion, four hundred six million, nine hundred eighty-seven thousand, five hundred eighty-nine".