128119611845 has 8 divisors (see below), whose sum is σ = 154184062200. Its totient is φ = 102202004160.

The previous prime is 128119611839. The next prime is 128119611863. The reversal of 128119611845 is 548116911821.

It is a Cunningham number, because it is equal to 357938²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 46122716644 + 81996895201 = 214762^2 + 286351^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128119611845 - 2²⁸ = 127851176389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128119611845.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36708746 + ... + 36712235.

It is an arithmetic number, because the mean of its divisors is an integer number (19273007775).

Almost surely, 2^128119611845 is an apocalyptic number.

It is an amenable number.

128119611845 is a deficient number, since it is larger than the sum of its proper divisors (26064450355).

128119611845 is an equidigital number, since it uses as much as digits as its factorization.

128119611845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73421335.

The product of its digits is 138240, while the sum is 47.

The spelling of 128119611845 in words is "one hundred twenty-eight billion, one hundred nineteen million, six hundred eleven thousand, eight hundred forty-five".