8128534173738 has 48 divisors (see below), whose sum is σ = 18445769948928. Its totient is φ = 2383734355200.

The previous prime is 8128534173719. The next prime is 8128534173787. The reversal of 8128534173738 is 8373714358218.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180563431 + ... + 180608442.

It is an arithmetic number, because the mean of its divisors is an integer number (384286873936).

Almost surely, 2^{8128534173738} is an apocalyptic number.

8128534173738 is an abundant number, since it is smaller than the sum of its proper divisors (10317235775190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8128534173738 is a wasteful number, since it uses less digits than its factorization.

8128534173738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361171931 (or 361171920 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 60.

The spelling of 8128534173738 in words is "eight trillion, one hundred twenty-eight billion, five hundred thirty-four million, one hundred seventy-three thousand, seven hundred thirty-eight".