54126320654489 has 2 divisors, whose sum is σ = 54126320654490. Its totient is φ = 54126320654488.

The previous prime is 54126320654479. The next prime is 54126320654557. The reversal of 54126320654489 is 98445602362145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36818099755264 + 17308220899225 = 6067792^2 + 4160315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54126320654489 is a prime.

It is a super-2 number, since 2×54126320654489² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54126320654449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27063160327244 + 27063160327245.

It is an arithmetic number, because the mean of its divisors is an integer number (27063160327245).

Almost surely, 2^{54126320654489} is an apocalyptic number.

It is an amenable number.

54126320654489 is a deficient number, since it is larger than the sum of its proper divisors (1).

54126320654489 is an equidigital number, since it uses as much as digits as its factorization.

54126320654489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49766400, while the sum is 59.

The spelling of 54126320654489 in words is "fifty-four trillion, one hundred twenty-six billion, three hundred twenty million, six hundred fifty-four thousand, four hundred eighty-nine".