6061501661 has 2 divisors, whose sum is σ = 6061501662. Its totient is φ = 6061501660.

The previous prime is 6061501643. The next prime is 6061501711. The reversal of 6061501661 is 1661051606.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4942933636 + 1118568025 = 70306^2 + 33445^2 .

It is a cyclic number.

It is not a de Polignac number, because 6061501661 - 2¹⁴ = 6061485277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6061501601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030750830 + 3030750831.

It is an arithmetic number, because the mean of its divisors is an integer number (3030750831).

Almost surely, 2^6061501661 is an apocalyptic number.

It is an amenable number.

6061501661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6061501661 is an equidigital number, since it uses as much as digits as its factorization.

6061501661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 6061501661 is about 77855.6463013441. The cubic root of 6061501661 is about 1823.3081623489.

The spelling of 6061501661 in words is "six billion, sixty-one million, five hundred one thousand, six hundred sixty-one".