128049474667 has 2 divisors, whose sum is σ = 128049474668. Its totient is φ = 128049474666.

The previous prime is 128049474643. The next prime is 128049474691. The reversal of 128049474667 is 766474940821.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (128049474643) and next prime (128049474691).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128049474667 is a prime.

It is not a weakly prime, because it can be changed into another prime (128049472667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64024737333 + 64024737334.

It is an arithmetic number, because the mean of its divisors is an integer number (64024737334).

Almost surely, 2^128049474667 is an apocalyptic number.

128049474667 is a deficient number, since it is larger than the sum of its proper divisors (1).

128049474667 is an equidigital number, since it uses as much as digits as its factorization.

128049474667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 58.

The spelling of 128049474667 in words is "one hundred twenty-eight billion, forty-nine million, four hundred seventy-four thousand, six hundred sixty-seven".