6005665001601 has 6 divisors (see below), whose sum is σ = 8674849446770. Its totient is φ = 4003776667728.

The previous prime is 6005665001591. The next prime is 6005665001621. The reversal of 6005665001601 is 1061005665006.

It can be written as a sum of positive squares in only one way, i.e., 3740835647376 + 2264829354225 = 1934124^2 + 1504935^2 .

It is not a de Polignac number, because 6005665001601 - 2³¹ = 6003517517953 is a prime.

It is a super-2 number, since 2×6005665001601² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6005665001621) 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, 333648055636 + ... + 333648055653.

Almost surely, 2^{6005665001601} is an apocalyptic number.

It is an amenable number.

6005665001601 is a deficient number, since it is larger than the sum of its proper divisors (2669184445169).

6005665001601 is a wasteful number, since it uses less digits than its factorization.

6005665001601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667296111295 (or 667296111292 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 6005665001601 in words is "six trillion, five billion, six hundred sixty-five million, one thousand, six hundred one".