16326655398 has 48 divisors (see below), whose sum is σ = 37473692256. Its totient is φ = 5119568640.

The previous prime is 16326655391. The next prime is 16326655399. The reversal of 16326655398 is 89355662361.

It is a happy number.

16326655398 is a `hidden beast` number, since 1 + 63 + 26 + 6 + 553 + 9 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16326655391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 667615 + ... + 691637.

It is an arithmetic number, because the mean of its divisors is an integer number (780701922).

Almost surely, 2^16326655398 is an apocalyptic number.

16326655398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16326655398 is an abundant number, since it is smaller than the sum of its proper divisors (21147036858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16326655398 is a wasteful number, since it uses less digits than its factorization.

16326655398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26269 (or 26266 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 54.

The spelling of 16326655398 in words is "sixteen billion, three hundred twenty-six million, six hundred fifty-five thousand, three hundred ninety-eight".