16432520161563 has 12 divisors (see below), whose sum is σ = 25893668133528. Its totient is φ = 9959103128160.

The previous prime is 16432520161549. The next prime is 16432520161609. The reversal of 16432520161563 is 36516102523461.

It is a happy number.

16432520161563 is a `hidden beast` number, since 1 + 6 + 4 + 3 + 2 + 5 + 20 + 1 + 61 + 563 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-16432520161563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16432520161763) 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, 82992525970 + ... + 82992526167.

It is an arithmetic number, because the mean of its divisors is an integer number (2157805677794).

Almost surely, 2^{16432520161563} is an apocalyptic number.

16432520161563 is a deficient number, since it is larger than the sum of its proper divisors (9461147971965).

16432520161563 is a wasteful number, since it uses less digits than its factorization.

16432520161563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165985052154 (or 165985052151 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 16432520161563 in words is "sixteen trillion, four hundred thirty-two billion, five hundred twenty million, one hundred sixty-one thousand, five hundred sixty-three".