16078493601 has 45 divisors (see below), whose sum is σ = 24478848009. Its totient is φ = 10517382144.

The previous prime is 16078493593. The next prime is 16078493609. The reversal of 16078493601 is 10639487061.

It is a happy number.

The square root of 16078493601 is 126801.

It is a perfect power (a square), and thus also a powerful number.

16078493601 is a `hidden beast` number, since 1 + 607 + 8 + 4 + 9 + 36 + 0 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (16078493593) and next prime (16078493609).

It can be written as a sum of positive squares in 4 ways, for example, as 652853601 + 15425640000 = 25551^2 + 124200^2 .

It is not a de Polignac number, because 16078493601 - 2³ = 16078493593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16078493609) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 83308161 + ... + 83308353.

Almost surely, 2^16078493601 is an apocalyptic number.

16078493601 is the 126801-st square number.

16078493601 is the 63401-st centered octagonal number.

It is an amenable number.

16078493601 is a deficient number, since it is larger than the sum of its proper divisors (8400354408).

16078493601 is an frugal number, since it uses more digits than its factorization.

16078493601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 16078493601 in words is "sixteen billion, seventy-eight million, four hundred ninety-three thousand, six hundred one".