16545723556240 has 40 divisors (see below), whose sum is σ = 38704812251328. Its totient is φ = 6577686414720.

The previous prime is 16545723556181. The next prime is 16545723556303. The reversal of 16545723556240 is 4265532754561.

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

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, 634408876 + ... + 634434955.

Almost surely, 2^{16545723556240} is an apocalyptic number.

16545723556240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16545723556240 is an abundant number, since it is smaller than the sum of its proper divisors (22159088695088).

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

16545723556240 is a wasteful number, since it uses less digits than its factorization.

16545723556240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268844007 (or 1268844001 counting only the distinct ones).

The product of its (nonzero) digits is 30240000, while the sum is 55.

The spelling of 16545723556240 in words is "sixteen trillion, five hundred forty-five billion, seven hundred twenty-three million, five hundred fifty-six thousand, two hundred forty".