16540860444 has 24 divisors (see below), whose sum is σ = 38873009280. Its totient is φ = 5473953264.

The previous prime is 16540860409. The next prime is 16540860449. The reversal of 16540860444 is 44406804561.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16540860396 and 16540860405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16540860449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4956624 + ... + 4959959.

It is an arithmetic number, because the mean of its divisors is an integer number (1619708720).

Almost surely, 2^16540860444 is an apocalyptic number.

It is an amenable number.

16540860444 is an abundant number, since it is smaller than the sum of its proper divisors (22332148836).

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

16540860444 is a wasteful number, since it uses less digits than its factorization.

16540860444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9916729 (or 9916727 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 16540860444 in words is "sixteen billion, five hundred forty million, eight hundred sixty thousand, four hundred forty-four".