64674247441 has 2 divisors, whose sum is σ = 64674247442. Its totient is φ = 64674247440.

The previous prime is 64674247439. The next prime is 64674247471. The reversal of 64674247441 is 14474247646.

64674247441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64589681025 + 84566416 = 254145^2 + 9196^2 .

It is a cyclic number.

It is not a de Polignac number, because 64674247441 - 2¹ = 64674247439 is a prime.

Together with 64674247439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64674247471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32337123720 + 32337123721.

It is an arithmetic number, because the mean of its divisors is an integer number (32337123721).

Almost surely, 2^64674247441 is an apocalyptic number.

It is an amenable number.

64674247441 is a deficient number, since it is larger than the sum of its proper divisors (1).

64674247441 is an equidigital number, since it uses as much as digits as its factorization.

64674247441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3612672, while the sum is 49.

The spelling of 64674247441 in words is "sixty-four billion, six hundred seventy-four million, two hundred forty-seven thousand, four hundred forty-one".