16574438434 has 16 divisors (see below), whose sum is σ = 26194476672. Its totient is φ = 7849942848.

The previous prime is 16574438431. The next prime is 16574438437. The reversal of 16574438434 is 43483447561.

It is an interprime number because it is at equal distance from previous prime (16574438431) and next prime (16574438437).

It is not an unprimeable number, because it can be changed into a prime (16574438431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1744359 + ... + 1753834.

It is an arithmetic number, because the mean of its divisors is an integer number (1637154792).

Almost surely, 2^16574438434 is an apocalyptic number.

16574438434 is a deficient number, since it is larger than the sum of its proper divisors (9620038238).

16574438434 is a wasteful number, since it uses less digits than its factorization.

16574438434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498321.

The product of its digits is 3870720, while the sum is 49.

The spelling of 16574438434 in words is "sixteen billion, five hundred seventy-four million, four hundred thirty-eight thousand, four hundred thirty-four".