16042801640 has 16 divisors (see below), whose sum is σ = 36096303780. Its totient is φ = 6417120640.

The previous prime is 16042801633. The next prime is 16042801651. The reversal of 16042801640 is 4610824061.

It can be written as a sum of positive squares in 2 ways, for example, as 15967355044 + 75446596 = 126362^2 + 8686^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16042801597 and 16042801606.

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, 200534981 + ... + 200535060.

Almost surely, 2^16042801640 is an apocalyptic number.

16042801640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16042801640 is an abundant number, since it is smaller than the sum of its proper divisors (20053502140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16042801640 is a wasteful number, since it uses less digits than its factorization.

16042801640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401070052 (or 401070048 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 16042801640 in words is "sixteen billion, forty-two million, eight hundred one thousand, six hundred forty".