64188257954207 has 2 divisors, whose sum is σ = 64188257954208. Its totient is φ = 64188257954206.

The previous prime is 64188257954189. The next prime is 64188257954263. The reversal of 64188257954207 is 70245975288146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64188257954207 - 2¹² = 64188257950111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64188257954297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32094128977103 + 32094128977104.

It is an arithmetic number, because the mean of its divisors is an integer number (32094128977104).

Almost surely, 2^{64188257954207} is an apocalyptic number.

64188257954207 is a deficient number, since it is larger than the sum of its proper divisors (1).

64188257954207 is an equidigital number, since it uses as much as digits as its factorization.

64188257954207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270950400, while the sum is 68.

The spelling of 64188257954207 in words is "sixty-four trillion, one hundred eighty-eight billion, two hundred fifty-seven million, nine hundred fifty-four thousand, two hundred seven".