16605633150001 has 27 divisors (see below), whose sum is σ = 19452248497899. Its totient is φ = 14134255068528.

The previous prime is 16605633149993. The next prime is 16605633150019. The reversal of 16605633150001 is 10005133650661.

The square root of 16605633150001 is 4075001.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1945464250401 + 14660168899600 = 1394799^2 + 3828860^2 .

It is not a de Polignac number, because 16605633150001 - 2³ = 16605633149993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16605633150101) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4250224090 + ... + 4250227996.

Almost surely, 2^{16605633150001} is an apocalyptic number.

16605633150001 is the 4075001-st square number.

16605633150001 is the 2037501-st centered octagonal number.

It is an amenable number.

16605633150001 is a deficient number, since it is larger than the sum of its proper divisors (2846615347898).

16605633150001 is an frugal number, since it uses more digits than its factorization.

16605633150001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8126 (or 4063 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 16605633150001 in words is "sixteen trillion, six hundred five billion, six hundred thirty-three million, one hundred fifty thousand, one".