16643153601 has 12 divisors (see below), whose sum is σ = 24215587812. Its totient is φ = 11014446336.

The previous prime is 16643153587. The next prime is 16643153603. The reversal of 16643153601 is 10635134661.

16643153601 is a `hidden beast` number, since 1 + 6 + 6 + 43 + 1 + 5 + 3 + 601 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10779422976 + 5863730625 = 103824^2 + 76575^2 .

It is not a de Polignac number, because 16643153601 - 2¹⁵ = 16643120833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16643153603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6747816 + ... + 6750281.

It is an arithmetic number, because the mean of its divisors is an integer number (2017965651).

Almost surely, 2^16643153601 is an apocalyptic number.

It is an amenable number.

16643153601 is a deficient number, since it is larger than the sum of its proper divisors (7572434211).

16643153601 is a wasteful number, since it uses less digits than its factorization.

16643153601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13498240 (or 13498237 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 16643153601 in words is "sixteen billion, six hundred forty-three million, one hundred fifty-three thousand, six hundred one".