61065513000172 has 12 divisors (see below), whose sum is σ = 107172615037320. Its totient is φ = 30444765846656.

The previous prime is 61065513000137. The next prime is 61065513000229. The reversal of 61065513000172 is 27100031556016.

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, 21997661797 + ... + 21997664572.

It is an arithmetic number, because the mean of its divisors is an integer number (8931051253110).

Almost surely, 2^{61065513000172} is an apocalyptic number.

It is an amenable number.

61065513000172 is a deficient number, since it is larger than the sum of its proper divisors (46107102037148).

61065513000172 is a wasteful number, since it uses less digits than its factorization.

61065513000172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43995326720 (or 43995326718 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

Adding to 61065513000172 its reverse (27100031556016), we get a palindrome (88165544556188).

The spelling of 61065513000172 in words is "sixty-one trillion, sixty-five billion, five hundred thirteen million, one hundred seventy-two", and thus it is an aban number.