128670305633 has 2 divisors, whose sum is σ = 128670305634. Its totient is φ = 128670305632.

The previous prime is 128670305629. The next prime is 128670305657. The reversal of 128670305633 is 336503076821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101676801424 + 26993504209 = 318868^2 + 164297^2 .

It is a cyclic number.

It is not a de Polignac number, because 128670305633 - 2² = 128670305629 is a prime.

It is not a weakly prime, because it can be changed into another prime (128670305663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64335152816 + 64335152817.

It is an arithmetic number, because the mean of its divisors is an integer number (64335152817).

Almost surely, 2^128670305633 is an apocalyptic number.

It is an amenable number.

128670305633 is a deficient number, since it is larger than the sum of its proper divisors (1).

128670305633 is an equidigital number, since it uses as much as digits as its factorization.

128670305633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 128670305633 in words is "one hundred twenty-eight billion, six hundred seventy million, three hundred five thousand, six hundred thirty-three".