16455454561 has 16 divisors (see below), whose sum is σ = 20256006400. Its totient is φ = 13017682368.

The previous prime is 16455454553. The next prime is 16455454577. The reversal of 16455454561 is 16545455461.

It is a cyclic number.

It is not a de Polignac number, because 16455454561 - 2³ = 16455454553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16455454511) 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, 907300 + ... + 925258.

It is an arithmetic number, because the mean of its divisors is an integer number (1266000400).

Almost surely, 2^16455454561 is an apocalyptic number.

It is an amenable number.

16455454561 is a deficient number, since it is larger than the sum of its proper divisors (3800551839).

16455454561 is a wasteful number, since it uses less digits than its factorization.

16455454561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28048.

The product of its digits is 1440000, while the sum is 46.

The spelling of 16455454561 in words is "sixteen billion, four hundred fifty-five million, four hundred fifty-four thousand, five hundred sixty-one".