16453101621563 has 4 divisors (see below), whose sum is σ = 16464196094808. Its totient is φ = 16442007148320.

The previous prime is 16453101621547. The next prime is 16453101621589. The reversal of 16453101621563 is 36512610135461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16453101621563 - 2⁴ = 16453101621547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16453101621763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5547234398 + ... + 5547237363.

It is an arithmetic number, because the mean of its divisors is an integer number (4116049023702).

Almost surely, 2^{16453101621563} is an apocalyptic number.

16453101621563 is a deficient number, since it is larger than the sum of its proper divisors (11094473245).

16453101621563 is a wasteful number, since it uses less digits than its factorization.

16453101621563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11094473244.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 16453101621563 in words is "sixteen trillion, four hundred fifty-three billion, one hundred one million, six hundred twenty-one thousand, five hundred sixty-three".