16505160061 has 6 divisors (see below), whose sum is σ = 17872451610. Its totient is φ = 15235532208.

The previous prime is 16505160041. The next prime is 16505160109. The reversal of 16505160061 is 16006150561.

It can be written as a sum of positive squares in 3 ways, for example, as 651831961 + 15853328100 = 25531^2 + 125910^2 .

It is not a de Polignac number, because 16505160061 - 2¹³ = 16505151869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16505160011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48831666 + ... + 48832003.

It is an arithmetic number, because the mean of its divisors is an integer number (2978741935).

Almost surely, 2^16505160061 is an apocalyptic number.

It is an amenable number.

16505160061 is a deficient number, since it is larger than the sum of its proper divisors (1367291549).

16505160061 is an equidigital number, since it uses as much as digits as its factorization.

16505160061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97663695 (or 97663682 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 16505160061 in words is "sixteen billion, five hundred five million, one hundred sixty thousand, sixty-one".