16444406252540 has 48 divisors (see below), whose sum is σ = 39476667492864. Its totient is φ = 5636640360000.

The previous prime is 16444406252507. The next prime is 16444406252557. The reversal of 16444406252540 is 4525260444461.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14469086 + ... + 15564165.

It is an arithmetic number, because the mean of its divisors is an integer number (822430572768).

Almost surely, 2^{16444406252540} is an apocalyptic number.

16444406252540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16444406252540 is an abundant number, since it is smaller than the sum of its proper divisors (23032261240324).

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

16444406252540 is a wasteful number, since it uses less digits than its factorization.

16444406252540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30037178 (or 30037176 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 47.

The spelling of 16444406252540 in words is "sixteen trillion, four hundred forty-four billion, four hundred six million, two hundred fifty-two thousand, five hundred forty".