16955266890438 has 224 divisors, whose sum is σ = 41700504856896. Its totient is φ = 5147413899264.

The previous prime is 16955266890433. The next prime is 16955266890439. The reversal of 16955266890438 is 83409866255961.

It is a happy number.

16955266890438 is a `hidden beast` number, since 1 + 6 + 9 + 5 + 52 + 66 + 89 + 0 + 438 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16955266890431) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 95808631 + ... + 95985437.

Almost surely, 2^{16955266890438} is an apocalyptic number.

16955266890438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16955266890438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20850252428448).

16955266890438 is an abundant number, since it is smaller than the sum of its proper divisors (24745237966458).

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

16955266890438 is a wasteful number, since it uses less digits than its factorization.

16955266890438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176970 (or 176955 counting only the distinct ones).

The product of its (nonzero) digits is 671846400, while the sum is 72.

The spelling of 16955266890438 in words is "sixteen trillion, nine hundred fifty-five billion, two hundred sixty-six million, eight hundred ninety thousand, four hundred thirty-eight".