128275533157 has 2 divisors, whose sum is σ = 128275533158. Its totient is φ = 128275533156.

The previous prime is 128275533121. The next prime is 128275533209. The reversal of 128275533157 is 751335572821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93021340036 + 35254193121 = 304994^2 + 187761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128275533157 is a prime.

It is a super-2 number, since 2×128275533157² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128275533157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128275533457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64137766578 + 64137766579.

It is an arithmetic number, because the mean of its divisors is an integer number (64137766579).

Almost surely, 2^128275533157 is an apocalyptic number.

It is an amenable number.

128275533157 is a deficient number, since it is larger than the sum of its proper divisors (1).

128275533157 is an equidigital number, since it uses as much as digits as its factorization.

128275533157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764000, while the sum is 49.

The spelling of 128275533157 in words is "one hundred twenty-eight billion, two hundred seventy-five million, five hundred thirty-three thousand, one hundred fifty-seven".