16078638538 has 8 divisors (see below), whose sum is σ = 24167079360. Its totient is φ = 8022945420.

The previous prime is 16078638463. The next prime is 16078638547. The reversal of 16078638538 is 83583687061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8185698 + ... + 8187661.

It is an arithmetic number, because the mean of its divisors is an integer number (3020884920).

Almost surely, 2^16078638538 is an apocalyptic number.

16078638538 is a deficient number, since it is larger than the sum of its proper divisors (8088440822).

16078638538 is a wasteful number, since it uses less digits than its factorization.

16078638538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16373852.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 16078638538 in words is "sixteen billion, seventy-eight million, six hundred thirty-eight thousand, five hundred thirty-eight".