16517378540 has 24 divisors (see below), whose sum is σ = 37354687440. Its totient is φ = 6098724288.

The previous prime is 16517378513. The next prime is 16517378557. The reversal of 16517378540 is 4587371561.

16517378540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31763930 + ... + 31764449.

It is an arithmetic number, because the mean of its divisors is an integer number (1556445310).

Almost surely, 2^16517378540 is an apocalyptic number.

16517378540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16517378540 is an abundant number, since it is smaller than the sum of its proper divisors (20837308900).

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

16517378540 is a wasteful number, since it uses less digits than its factorization.

16517378540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63528401 (or 63528399 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 16517378540 in words is "sixteen billion, five hundred seventeen million, three hundred seventy-eight thousand, five hundred forty".