16623024561 has 96 divisors (see below), whose sum is σ = 28870732800. Its totient is φ = 9083468160.

The previous prime is 16623024557. The next prime is 16623024611. The reversal of 16623024561 is 16542032661.

16623024561 is a `hidden beast` number, since 1 + 6 + 62 + 30 + 2 + 4 + 561 = 666.

It is not a de Polignac number, because 16623024561 - 2² = 16623024557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16623024161) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13591396 + ... + 13592618.

It is an arithmetic number, because the mean of its divisors is an integer number (300736800).

Almost surely, 2^16623024561 is an apocalyptic number.

16623024561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16623024561 is a deficient number, since it is larger than the sum of its proper divisors (12247708239).

16623024561 is a wasteful number, since it uses less digits than its factorization.

16623024561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 16623024561 in words is "sixteen billion, six hundred twenty-three million, twenty-four thousand, five hundred sixty-one".