16451444412540 has 96 divisors (see below), whose sum is σ = 51376881346560. Its totient is φ = 4370371000128.

The previous prime is 16451444412523. The next prime is 16451444412553. The reversal of 16451444412540 is 4521444415461.

16451444412540 is a `hidden beast` number, since 1 + 6 + 4 + 5 + 144 + 441 + 25 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57777444 + ... + 58061483.

It is an arithmetic number, because the mean of its divisors is an integer number (535175847360).

Almost surely, 2^{16451444412540} is an apocalyptic number.

16451444412540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16451444412540 is an abundant number, since it is smaller than the sum of its proper divisors (34925436934020).

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

16451444412540 is a wasteful number, since it uses less digits than its factorization.

16451444412540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115839208 (or 115839200 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 45.

The spelling of 16451444412540 in words is "sixteen trillion, four hundred fifty-one billion, four hundred forty-four million, four hundred twelve thousand, five hundred forty".