16574504477 has 4 divisors (see below), whose sum is σ = 16729406496. Its totient is φ = 16419602460.

The previous prime is 16574504461. The next prime is 16574504489. The reversal of 16574504477 is 77440547561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16574504477 - 2⁴ = 16574504461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16574504417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77450849 + ... + 77451062.

It is an arithmetic number, because the mean of its divisors is an integer number (4182351624).

Almost surely, 2^16574504477 is an apocalyptic number.

It is an amenable number.

16574504477 is a deficient number, since it is larger than the sum of its proper divisors (154902019).

16574504477 is a wasteful number, since it uses less digits than its factorization.

16574504477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154902018.

The product of its (nonzero) digits is 3292800, while the sum is 50.

The spelling of 16574504477 in words is "sixteen billion, five hundred seventy-four million, five hundred four thousand, four hundred seventy-seven".