128546673394 has 8 divisors (see below), whose sum is σ = 192825881820. Its totient is φ = 64271379456.

The previous prime is 128546673371. The next prime is 128546673407. The reversal of 128546673394 is 493376645821.

It can be written as a sum of positive squares in 2 ways, for example, as 123436282225 + 5110391169 = 351335^2 + 71487^2 .

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

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, 895099 + ... + 1028734.

Almost surely, 2^128546673394 is an apocalyptic number.

128546673394 is a deficient number, since it is larger than the sum of its proper divisors (64279208426).

128546673394 is a wasteful number, since it uses less digits than its factorization.

128546673394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957244.

The product of its digits is 26127360, while the sum is 58.

The spelling of 128546673394 in words is "one hundred twenty-eight billion, five hundred forty-six million, six hundred seventy-three thousand, three hundred ninety-four".