16001454545664 has 144 divisors (see below), whose sum is σ = 48824632674048. Its totient is φ = 4557421449216.

The previous prime is 16001454545623. The next prime is 16001454545677. The reversal of 16001454545664 is 46654545410061.

It is a super-2 number, since 2×16001454545664² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2990542 + ... + 6398925.

Almost surely, 2^{16001454545664} is an apocalyptic number.

16001454545664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16001454545664 is an abundant number, since it is smaller than the sum of its proper divisors (32823178128384).

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

16001454545664 is an equidigital number, since it uses as much as digits as its factorization.

16001454545664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9389810 (or 9389796 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 51.

The spelling of 16001454545664 in words is "sixteen trillion, one billion, four hundred fifty-four million, five hundred forty-five thousand, six hundred sixty-four".