128567841245 has 8 divisors (see below), whose sum is σ = 154509303384. Its totient is φ = 102702343744.

The previous prime is 128567841239. The next prime is 128567841251. The reversal of 128567841245 is 542148765821.

It is an interprime number because it is at equal distance from previous prime (128567841239) and next prime (128567841251).

It can be written as a sum of positive squares in 4 ways, for example, as 96037390201 + 32530451044 = 309899^2 + 180362^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128567841245 - 2²⁴ = 128551064029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18987434 + ... + 18994203.

It is an arithmetic number, because the mean of its divisors is an integer number (19313662923).

Almost surely, 2^128567841245 is an apocalyptic number.

It is an amenable number.

128567841245 is a deficient number, since it is larger than the sum of its proper divisors (25941462139).

128567841245 is an equidigital number, since it uses as much as digits as its factorization.

128567841245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37982319.

The product of its digits is 4300800, while the sum is 53.

The spelling of 128567841245 in words is "one hundred twenty-eight billion, five hundred sixty-seven million, eight hundred forty-one thousand, two hundred forty-five".