64554755745547 has 2 divisors, whose sum is σ = 64554755745548. Its totient is φ = 64554755745546.

The previous prime is 64554755745511. The next prime is 64554755745559. The reversal of 64554755745547 is 74554755745546.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64554755745547 - 2⁷ = 64554755745419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64554755745547.

It is not a weakly prime, because it can be changed into another prime (64554755745587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32277377872773 + 32277377872774.

It is an arithmetic number, because the mean of its divisors is an integer number (32277377872774).

Almost surely, 2^{64554755745547} is an apocalyptic number.

64554755745547 is a deficient number, since it is larger than the sum of its proper divisors (1).

64554755745547 is an equidigital number, since it uses as much as digits as its factorization.

64554755745547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8232000000, while the sum is 73.

Subtracting 64554755745547 from its reverse (74554755745546), we obtain a palindrome (9999999999999).

The spelling of 64554755745547 in words is "sixty-four trillion, five hundred fifty-four billion, seven hundred fifty-five million, seven hundred forty-five thousand, five hundred forty-seven".