128105337479 has 8 divisors (see below), whose sum is σ = 155018223648. Its totient is φ = 103345482240.

The previous prime is 128105337469. The next prime is 128105337527. The reversal of 128105337479 is 974733501821.

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

It is a de Polignac number, because none of the positive numbers 2^k-128105337479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128105337449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538257602 + ... + 538257839.

It is an arithmetic number, because the mean of its divisors is an integer number (19377277956).

Almost surely, 2^128105337479 is an apocalyptic number.

128105337479 is a deficient number, since it is larger than the sum of its proper divisors (26912886169).

128105337479 is a wasteful number, since it uses less digits than its factorization.

128105337479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076515465.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 128105337479 in words is "one hundred twenty-eight billion, one hundred five million, three hundred thirty-seven thousand, four hundred seventy-nine".