16451366547403 has 2 divisors, whose sum is σ = 16451366547404. Its totient is φ = 16451366547402.

The previous prime is 16451366547397. The next prime is 16451366547431. The reversal of 16451366547403 is 30474566315461.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16451366547403 is a prime.

It is a super-2 number, since 2×16451366547403² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16451366547443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8225683273701 + 8225683273702.

It is an arithmetic number, because the mean of its divisors is an integer number (8225683273702).

Almost surely, 2^{16451366547403} is an apocalyptic number.

16451366547403 is a deficient number, since it is larger than the sum of its proper divisors (1).

16451366547403 is an equidigital number, since it uses as much as digits as its factorization.

16451366547403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800, while the sum is 55.

The spelling of 16451366547403 in words is "sixteen trillion, four hundred fifty-one billion, three hundred sixty-six million, five hundred forty-seven thousand, four hundred three".