5165301661 has 12 divisors (see below), whose sum is σ = 5641251028. Its totient is φ = 4700640384.

The previous prime is 5165301649. The next prime is 5165301683. The reversal of 5165301661 is 1661035615.

It can be written as a sum of positive squares in 6 ways, for example, as 516652900 + 4648648761 = 22730^2 + 68181^2 .

It is not a de Polignac number, because 5165301661 - 2¹¹ = 5165299613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5165301611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2212851 + ... + 2215183.

Almost surely, 2^5165301661 is an apocalyptic number.

It is an amenable number.

5165301661 is a deficient number, since it is larger than the sum of its proper divisors (475949367).

5165301661 is an frugal number, since it uses more digits than its factorization.

5165301661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 5165301661 is about 71870.0331222965. The cubic root of 5165301661 is about 1728.6161386866.

The spelling of 5165301661 in words is "five billion, one hundred sixty-five million, three hundred one thousand, six hundred sixty-one".