16275603456 has 432 divisors, whose sum is σ = 56488670784. Its totient is φ = 4586471424.

The previous prime is 16275603439. The next prime is 16275603469. The reversal of 16275603456 is 65430657261.

16275603456 is a `hidden beast` number, since 1 + 6 + 2 + 7 + 560 + 34 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222953436 + ... + 222953508.

It is an arithmetic number, because the mean of its divisors is an integer number (130760812).

Almost surely, 2^16275603456 is an apocalyptic number.

16275603456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16275603456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28244335392).

16275603456 is an abundant number, since it is smaller than the sum of its proper divisors (40213067328).

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

16275603456 is an frugal number, since it uses more digits than its factorization.

16275603456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 16275603456 in words is "sixteen billion, two hundred seventy-five million, six hundred three thousand, four hundred fifty-six".