128474616943 has 2 divisors, whose sum is σ = 128474616944. Its totient is φ = 128474616942.

The previous prime is 128474616923. The next prime is 128474616961. The reversal of 128474616943 is 349616474821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128474616943 is a prime.

It is a super-4 number, since 4×128474616943⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128474616923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64237308471 + 64237308472.

It is an arithmetic number, because the mean of its divisors is an integer number (64237308472).

Almost surely, 2^128474616943 is an apocalyptic number.

128474616943 is a deficient number, since it is larger than the sum of its proper divisors (1).

128474616943 is an equidigital number, since it uses as much as digits as its factorization.

128474616943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 55.

The spelling of 128474616943 in words is "one hundred twenty-eight billion, four hundred seventy-four million, six hundred sixteen thousand, nine hundred forty-three".