128831783623 has 2 divisors, whose sum is σ = 128831783624. Its totient is φ = 128831783622.

The previous prime is 128831783599. The next prime is 128831783693. The reversal of 128831783623 is 326387138821.

It is a weak prime.

It is an emirp because it is prime and its reverse (326387138821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128831783623 - 2²¹ = 128829686471 is a prime.

It is a super-2 number, since 2×128831783623² (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 (128831783693) 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, 64415891811 + 64415891812.

It is an arithmetic number, because the mean of its divisors is an integer number (64415891812).

Almost surely, 2^128831783623 is an apocalyptic number.

128831783623 is a deficient number, since it is larger than the sum of its proper divisors (1).

128831783623 is an equidigital number, since it uses as much as digits as its factorization.

128831783623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 52.

The spelling of 128831783623 in words is "one hundred twenty-eight billion, eight hundred thirty-one million, seven hundred eighty-three thousand, six hundred twenty-three".