128984602786513 has 2 divisors, whose sum is σ = 128984602786514. Its totient is φ = 128984602786512.

The previous prime is 128984602786499. The next prime is 128984602786549. The reversal of 128984602786513 is 315687206489821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125952766145424 + 3031836641089 = 11222868^2 + 1741217^2 .

It is a cyclic number.

It is not a de Polignac number, because 128984602786513 - 2²¹ = 128984600689361 is a prime.

It is not a weakly prime, because it can be changed into another prime (128984602781513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64492301393256 + 64492301393257.

It is an arithmetic number, because the mean of its divisors is an integer number (64492301393257).

It is a 1-persistent number, because it is pandigital, but 2⋅128984602786513 = 257969205573026 is not.

Almost surely, 2^{128984602786513} is an apocalyptic number.

It is an amenable number.

128984602786513 is a deficient number, since it is larger than the sum of its proper divisors (1).

128984602786513 is an equidigital number, since it uses as much as digits as its factorization.

128984602786513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 278691840, while the sum is 70.

The spelling of 128984602786513 in words is "one hundred twenty-eight trillion, nine hundred eighty-four billion, six hundred two million, seven hundred eighty-six thousand, five hundred thirteen".