16456434505 has 16 divisors (see below), whose sum is σ = 22570988544. Its totient is φ = 11283330240.

The previous prime is 16456434499. The next prime is 16456434509. The reversal of 16456434505 is 50543465461.

It is not a de Polignac number, because 16456434505 - 2⁷ = 16456434377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16456434509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558984 + ... + 587686.

It is an arithmetic number, because the mean of its divisors is an integer number (1410686784).

Almost surely, 2^16456434505 is an apocalyptic number.

It is an amenable number.

16456434505 is a deficient number, since it is larger than the sum of its proper divisors (6114554039).

16456434505 is a wasteful number, since it uses less digits than its factorization.

16456434505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45096.

The product of its (nonzero) digits is 864000, while the sum is 43.

Adding to 16456434505 its reverse (50543465461), we get a palindrome (66999899966).

The spelling of 16456434505 in words is "sixteen billion, four hundred fifty-six million, four hundred thirty-four thousand, five hundred five".