27434609816 has 8 divisors (see below), whose sum is σ = 51439893420. Its totient is φ = 13717304904.

The previous prime is 27434609801. The next prime is 27434609819. The reversal of 27434609816 is 61890643472.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27434609819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1714663106 + ... + 1714663121.

Almost surely, 2^27434609816 is an apocalyptic number.

It is an amenable number.

27434609816 is a deficient number, since it is larger than the sum of its proper divisors (24005283604).

27434609816 is a wasteful number, since it uses less digits than its factorization.

27434609816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429326233 (or 3429326229 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 27434609816 in words is "twenty-seven billion, four hundred thirty-four million, six hundred nine thousand, eight hundred sixteen".