128926738546 has 4 divisors (see below), whose sum is σ = 193390107822. Its totient is φ = 64463369272.

The previous prime is 128926738541. The next prime is 128926738573. The reversal of 128926738546 is 645837629821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 68882627025 + 60044111521 = 262455^2 + 245039^2 .

It is not an unprimeable number, because it can be changed into a prime (128926738541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32231684635 + ... + 32231684638.

Almost surely, 2^128926738546 is an apocalyptic number.

128926738546 is a deficient number, since it is larger than the sum of its proper divisors (64463369276).

128926738546 is an equidigital number, since it uses as much as digits as its factorization.

128926738546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64463369275.

The product of its digits is 34836480, while the sum is 61.

The spelling of 128926738546 in words is "one hundred twenty-eight billion, nine hundred twenty-six million, seven hundred thirty-eight thousand, five hundred forty-six".