16401365223 has 16 divisors (see below), whose sum is σ = 21942471936. Its totient is φ = 10897286400.

The previous prime is 16401365221. The next prime is 16401365287. The reversal of 16401365223 is 32256310461.

It is not a de Polignac number, because 16401365223 - 2¹ = 16401365221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16401365221) 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, 2800248 + ... + 2806098.

It is an arithmetic number, because the mean of its divisors is an integer number (1371404496).

Almost surely, 2^16401365223 is an apocalyptic number.

16401365223 is a deficient number, since it is larger than the sum of its proper divisors (5541106713).

16401365223 is a wasteful number, since it uses less digits than its factorization.

16401365223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8854.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 16401365223 its reverse (32256310461), we get a palindrome (48657675684).

The spelling of 16401365223 in words is "sixteen billion, four hundred one million, three hundred sixty-five thousand, two hundred twenty-three".