16372645546640 has 40 divisors (see below), whose sum is σ = 38069329474680. Its totient is φ = 6548554377216.

The previous prime is 16372645546639. The next prime is 16372645546693. The reversal of 16372645546640 is 4664554627361.

It can be written as a sum of positive squares in 4 ways, for example, as 141673948816 + 16230971597824 = 376396^2 + 4028768^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 16372645546640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6825299 + ... + 8906738.

It is an arithmetic number, because the mean of its divisors is an integer number (951733236867).

Almost surely, 2^{16372645546640} is an apocalyptic number.

16372645546640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16372645546640 is an abundant number, since it is smaller than the sum of its proper divisors (21696683928040).

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

16372645546640 is a wasteful number, since it uses less digits than its factorization.

16372645546640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15745059 (or 15745053 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 59.

The spelling of 16372645546640 in words is "sixteen trillion, three hundred seventy-two billion, six hundred forty-five million, five hundred forty-six thousand, six hundred forty".