128366670172265 has 32 divisors (see below), whose sum is σ = 180431767676160. Its totient is φ = 85836470759424.

The previous prime is 128366670172259. The next prime is 128366670172267. The reversal of 128366670172265 is 562271076663821.

It is not a de Polignac number, because 128366670172265 - 2⁸ = 128366670172009 is a prime.

It is a super-2 number, since 2×128366670172265² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128366670172198 and 128366670172207.

It is not an unprimeable number, because it can be changed into a prime (128366670172267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68190920 + ... + 70048089.

It is an arithmetic number, because the mean of its divisors is an integer number (5638492739880).

Almost surely, 2^{128366670172265} is an apocalyptic number.

It is an amenable number.

128366670172265 is a deficient number, since it is larger than the sum of its proper divisors (52065097503895).

128366670172265 is a wasteful number, since it uses less digits than its factorization.

128366670172265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138239681.

The product of its (nonzero) digits is 60963840, while the sum is 62.

The spelling of 128366670172265 in words is "one hundred twenty-eight trillion, three hundred sixty-six billion, six hundred seventy million, one hundred seventy-two thousand, two hundred sixty-five".