128959931362 has 8 divisors (see below), whose sum is σ = 193441497516. Its totient is φ = 64479432192.

The previous prime is 128959931357. The next prime is 128959931479. The reversal of 128959931362 is 263139959821.

It can be written as a sum of positive squares in 2 ways, for example, as 121709579161 + 7250352201 = 348869^2 + 85149^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 128959931297 and 128959931306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195898 + ... + 544330.

Almost surely, 2^128959931362 is an apocalyptic number.

128959931362 is a deficient number, since it is larger than the sum of its proper divisors (64481566154).

128959931362 is a wasteful number, since it uses less digits than its factorization.

128959931362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533492.

The product of its digits is 6298560, while the sum is 58.

The spelling of 128959931362 in words is "one hundred twenty-eight billion, nine hundred fifty-nine million, nine hundred thirty-one thousand, three hundred sixty-two".