128294015567 has 2 divisors, whose sum is σ = 128294015568. Its totient is φ = 128294015566.

The previous prime is 128294015539. The next prime is 128294015579. The reversal of 128294015567 is 765510492821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128294015567 - 2¹⁰ = 128294014543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128294015587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64147007783 + 64147007784.

It is an arithmetic number, because the mean of its divisors is an integer number (64147007784).

Almost surely, 2^128294015567 is an apocalyptic number.

128294015567 is a deficient number, since it is larger than the sum of its proper divisors (1).

128294015567 is an equidigital number, since it uses as much as digits as its factorization.

128294015567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 128294015567 in words is "one hundred twenty-eight billion, two hundred ninety-four million, fifteen thousand, five hundred sixty-seven".