16451330071657 has 6 divisors (see below), whose sum is σ = 17814162148782. Its totient is φ = 15185843142912.

The previous prime is 16451330071633. The next prime is 16451330071691. The reversal of 16451330071657 is 75617003315461.

It can be written as a sum of positive squares in 3 ways, for example, as 1053012554896 + 15398317516761 = 1026164^2 + 3924069^2 .

It is not a de Polignac number, because 16451330071657 - 2⁷ = 16451330071529 is a prime.

It is a super-2 number, since 2×16451330071657² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16451330071657.

It is not an unprimeable number, because it can be changed into a prime (16451330071697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48672574008 + ... + 48672574345.

It is an arithmetic number, because the mean of its divisors is an integer number (2969027024797).

Almost surely, 2^{16451330071657} is an apocalyptic number.

It is an amenable number.

16451330071657 is a deficient number, since it is larger than the sum of its proper divisors (1362832077125).

16451330071657 is an equidigital number, since it uses as much as digits as its factorization.

16451330071657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97345148379 (or 97345148366 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 16451330071657 in words is "sixteen trillion, four hundred fifty-one billion, three hundred thirty million, seventy-one thousand, six hundred fifty-seven".