35171572138 has 4 divisors (see below), whose sum is σ = 52757358210. Its totient is φ = 17585786068.

The previous prime is 35171572063. The next prime is 35171572199. The reversal of 35171572138 is 83127517153.

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., 29961186649 + 5210385489 = 173093^2 + 72183^2 .

It is a junction number, because it is equal to n+sod(n) for n = 35171572094 and 35171572103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8792893033 + ... + 8792893036.

Almost surely, 2^35171572138 is an apocalyptic number.

35171572138 is a deficient number, since it is larger than the sum of its proper divisors (17585786072).

35171572138 is a wasteful number, since it uses less digits than its factorization.

35171572138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17585786071.

The product of its digits is 176400, while the sum is 43.

The spelling of 35171572138 in words is "thirty-five billion, one hundred seventy-one million, five hundred seventy-two thousand, one hundred thirty-eight".