16565136335140 has 48 divisors (see below), whose sum is σ = 36985902340464. Its totient is φ = 6210409881600.

The previous prime is 16565136335119. The next prime is 16565136335147. The reversal of 16565136335140 is 4153363156561.

It can be written as a sum of positive squares in 8 ways, for example, as 36081762304 + 16529054572836 = 189952^2 + 4065594^2 .

It is not an unprimeable number, because it can be changed into a prime (16565136335147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100998951 + ... + 101162830.

It is an arithmetic number, because the mean of its divisors is an integer number (770539632093).

Almost surely, 2^{16565136335140} is an apocalyptic number.

16565136335140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16565136335140 is an abundant number, since it is smaller than the sum of its proper divisors (20420766005324).

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

16565136335140 is a wasteful number, since it uses less digits than its factorization.

16565136335140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202162048 (or 202162046 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 49.

The spelling of 16565136335140 in words is "sixteen trillion, five hundred sixty-five billion, one hundred thirty-six million, three hundred thirty-five thousand, one hundred forty".