128567841251 has 2 divisors, whose sum is σ = 128567841252. Its totient is φ = 128567841250.

The previous prime is 128567841239. The next prime is 128567841299. The reversal of 128567841251 is 152148765821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128567841251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128567841251.

It is not a weakly prime, because it can be changed into another prime (128567841221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64283920625 + 64283920626.

It is an arithmetic number, because the mean of its divisors is an integer number (64283920626).

Almost surely, 2^128567841251 is an apocalyptic number.

128567841251 is a deficient number, since it is larger than the sum of its proper divisors (1).

128567841251 is an equidigital number, since it uses as much as digits as its factorization.

128567841251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1075200, while the sum is 50.

The spelling of 128567841251 in words is "one hundred twenty-eight billion, five hundred sixty-seven million, eight hundred forty-one thousand, two hundred fifty-one".