64345946503 has 2 divisors, whose sum is σ = 64345946504. Its totient is φ = 64345946502.

The previous prime is 64345946491. The next prime is 64345946521. The reversal of 64345946503 is 30564954346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64345946503 - 2¹⁷ = 64345815431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64345947503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32172973251 + 32172973252.

It is an arithmetic number, because the mean of its divisors is an integer number (32172973252).

Almost surely, 2^64345946503 is an apocalyptic number.

64345946503 is a deficient number, since it is larger than the sum of its proper divisors (1).

64345946503 is an equidigital number, since it uses as much as digits as its factorization.

64345946503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 64345946503 in words is "sixty-four billion, three hundred forty-five million, nine hundred forty-six thousand, five hundred three".