128333382555407 has 2 divisors, whose sum is σ = 128333382555408. Its totient is φ = 128333382555406.

The previous prime is 128333382555283. The next prime is 128333382555481. The reversal of 128333382555407 is 704555283333821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128333382555407 - 2¹⁴ = 128333382539023 is a prime.

It is a super-2 number, since 2×128333382555407² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128333382555107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64166691277703 + 64166691277704.

It is an arithmetic number, because the mean of its divisors is an integer number (64166691277704).

Almost surely, 2^{128333382555407} is an apocalyptic number.

128333382555407 is a deficient number, since it is larger than the sum of its proper divisors (1).

128333382555407 is an equidigital number, since it uses as much as digits as its factorization.

128333382555407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576000, while the sum is 59.

The spelling of 128333382555407 in words is "one hundred twenty-eight trillion, three hundred thirty-three billion, three hundred eighty-two million, five hundred fifty-five thousand, four hundred seven".