16545717665744 has 10 divisors (see below), whose sum is σ = 32057327977410. Its totient is φ = 8272858832864.

The previous prime is 16545717665707. The next prime is 16545717665761. The reversal of 16545717665744 is 44756671754561.

It can be written as a sum of positive squares in only one way, i.e., 14810859886144 + 1734857779600 = 3848488^2 + 1317140^2 .

It is a super-2 number, since 2×16545717665744² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 517053677039 + ... + 517053677070.

It is an arithmetic number, because the mean of its divisors is an integer number (3205732797741).

Almost surely, 2^{16545717665744} is an apocalyptic number.

It is an amenable number.

16545717665744 is a deficient number, since it is larger than the sum of its proper divisors (15511610311666).

16545717665744 is a wasteful number, since it uses less digits than its factorization.

16545717665744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034107354117 (or 1034107354111 counting only the distinct ones).

The product of its digits is 592704000, while the sum is 68.

The spelling of 16545717665744 in words is "sixteen trillion, five hundred forty-five billion, seven hundred seventeen million, six hundred sixty-five thousand, seven hundred forty-four".