175129007138 has 18 divisors (see below), whose sum is σ = 264197883771. Its totient is φ = 87065890164.

The previous prime is 175129007113. The next prime is 175129007147. The reversal of 175129007138 is 831700921571.

It can be written as a sum of positive squares in only one way, i.e., 87564503569 + 87564503569 = 295913^2 + 295913^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=295913.

It is a super-2 number, since 2×175129007138² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 117772631 + ... + 117774117.

Almost surely, 2^175129007138 is an apocalyptic number.

175129007138 is a deficient number, since it is larger than the sum of its proper divisors (89068876633).

175129007138 is an frugal number, since it uses more digits than its factorization.

175129007138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374 (or 1688 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 175129007138 in words is "one hundred seventy-five billion, one hundred twenty-nine million, seven thousand, one hundred thirty-eight".