16540375028 has 6 divisors (see below), whose sum is σ = 28945656306. Its totient is φ = 8270187512.

The previous prime is 16540375009. The next prime is 16540375051. The reversal of 16540375028 is 82057304561.

It can be written as a sum of positive squares in only one way, i.e., 15828659344 + 711715684 = 125812^2 + 26678^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2067546875 + ... + 2067546882.

It is an arithmetic number, because the mean of its divisors is an integer number (4824276051).

Almost surely, 2^16540375028 is an apocalyptic number.

It is an amenable number.

16540375028 is a deficient number, since it is larger than the sum of its proper divisors (12405281278).

16540375028 is a wasteful number, since it uses less digits than its factorization.

16540375028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4135093761 (or 4135093759 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

Adding to 16540375028 its reverse (82057304561), we get a palindrome (98597679589).

The spelling of 16540375028 in words is "sixteen billion, five hundred forty million, three hundred seventy-five thousand, twenty-eight".