64323251447047 has 2 divisors, whose sum is σ = 64323251447048. Its totient is φ = 64323251447046.

The previous prime is 64323251447033. The next prime is 64323251447197. The reversal of 64323251447047 is 74074415232346.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64323251447047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64323251446985 and 64323251447003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64323251477047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32161625723523 + 32161625723524.

It is an arithmetic number, because the mean of its divisors is an integer number (32161625723524).

Almost surely, 2^{64323251447047} is an apocalyptic number.

64323251447047 is a deficient number, since it is larger than the sum of its proper divisors (1).

64323251447047 is an equidigital number, since it uses as much as digits as its factorization.

64323251447047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13547520, while the sum is 52.

The spelling of 64323251447047 in words is "sixty-four trillion, three hundred twenty-three billion, two hundred fifty-one million, four hundred forty-seven thousand, forty-seven".