16634535360561 has 48 divisors (see below), whose sum is σ = 26384148895104. Its totient is φ = 10437025768704.

The previous prime is 16634535360529. The next prime is 16634535360589. The reversal of 16634535360561 is 16506353543661.

16634535360561 is a `hidden beast` number, since 1 + 6 + 6 + 3 + 4 + 53 + 536 + 0 + 56 + 1 = 666.

It is not a de Polignac number, because 16634535360561 - 2⁵ = 16634535360529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16634535360498 and 16634535360507.

It is not an unprimeable number, because it can be changed into a prime (16634535360761) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 244508796 + ... + 244576818.

It is an arithmetic number, because the mean of its divisors is an integer number (549669768648).

Almost surely, 2^{16634535360561} is an apocalyptic number.

It is an amenable number.

16634535360561 is a deficient number, since it is larger than the sum of its proper divisors (9749613534543).

16634535360561 is an equidigital number, since it uses as much as digits as its factorization.

16634535360561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127252 (or 127240 counting only the distinct ones).

The product of its (nonzero) digits is 17496000, while the sum is 54.

The spelling of 16634535360561 in words is "sixteen trillion, six hundred thirty-four billion, five hundred thirty-five million, three hundred sixty thousand, five hundred sixty-one".