54215274689 has 2 divisors, whose sum is σ = 54215274690. Its totient is φ = 54215274688.

The previous prime is 54215274649. The next prime is 54215274713. The reversal of 54215274689 is 98647251245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30877518400 + 23337756289 = 175720^2 + 152767^2 .

It is a cyclic number.

It is not a de Polignac number, because 54215274689 - 2⁸ = 54215274433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54215274689.

It is not a weakly prime, because it can be changed into another prime (54215274649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27107637344 + 27107637345.

It is an arithmetic number, because the mean of its divisors is an integer number (27107637345).

Almost surely, 2^54215274689 is an apocalyptic number.

It is an amenable number.

54215274689 is a deficient number, since it is larger than the sum of its proper divisors (1).

54215274689 is an equidigital number, since it uses as much as digits as its factorization.

54215274689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 53.

The spelling of 54215274689 in words is "fifty-four billion, two hundred fifteen million, two hundred seventy-four thousand, six hundred eighty-nine".