128378848007 has 2 divisors, whose sum is σ = 128378848008. Its totient is φ = 128378848006.

The previous prime is 128378847979. The next prime is 128378848021. The reversal of 128378848007 is 700848873821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128378848007 is a prime.

It is a super-2 number, since 2×128378848007² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128378848067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64189424003 + 64189424004.

It is an arithmetic number, because the mean of its divisors is an integer number (64189424004).

Almost surely, 2^128378848007 is an apocalyptic number.

128378848007 is a deficient number, since it is larger than the sum of its proper divisors (1).

128378848007 is an equidigital number, since it uses as much as digits as its factorization.

128378848007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4816896, while the sum is 56.

The spelling of 128378848007 in words is "one hundred twenty-eight billion, three hundred seventy-eight million, eight hundred forty-eight thousand, seven".