64454526457 has 2 divisors, whose sum is σ = 64454526458. Its totient is φ = 64454526456.

The previous prime is 64454526413. The next prime is 64454526497. The reversal of 64454526457 is 75462545446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54709677801 + 9744848656 = 233901^2 + 98716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64454526457 is a prime.

It is a super-3 number, since 3×64454526457³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (64454526497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32227263228 + 32227263229.

It is an arithmetic number, because the mean of its divisors is an integer number (32227263229).

Almost surely, 2^64454526457 is an apocalyptic number.

It is an amenable number.

64454526457 is a deficient number, since it is larger than the sum of its proper divisors (1).

64454526457 is an equidigital number, since it uses as much as digits as its factorization.

64454526457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128000, while the sum is 52.

The spelling of 64454526457 in words is "sixty-four billion, four hundred fifty-four million, five hundred twenty-six thousand, four hundred fifty-seven".