16455121213 has 16 divisors (see below), whose sum is σ = 16687440000. Its totient is φ = 16224878592.

The previous prime is 16455121211. The next prime is 16455121223. The reversal of 16455121213 is 31212155461.

It is a cyclic number.

It is not a de Polignac number, because 16455121213 - 2¹ = 16455121211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16455121211) 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, 21397693 + ... + 21398461.

It is an arithmetic number, because the mean of its divisors is an integer number (1042965000).

Almost surely, 2^16455121213 is an apocalyptic number.

It is an amenable number.

16455121213 is a deficient number, since it is larger than the sum of its proper divisors (232318787).

16455121213 is a wasteful number, since it uses less digits than its factorization.

16455121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764.

The product of its digits is 7200, while the sum is 31.

Adding to 16455121213 its reverse (31212155461), we get a palindrome (47667276674).

The spelling of 16455121213 in words is "sixteen billion, four hundred fifty-five million, one hundred twenty-one thousand, two hundred thirteen".