16261253334 has 56 divisors (see below), whose sum is σ = 36804545280. Its totient is φ = 5385817008.

The previous prime is 16261253257. The next prime is 16261253381. The reversal of 16261253334 is 43335216261.

16261253334 is a `hidden beast` number, since 1 + 6 + 2 + 612 + 5 + 3 + 3 + 34 = 666.

It is a super-2 number, since 2×16261253334² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 193387 + ... + 264425.

Almost surely, 2^16261253334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16261253334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18402272640).

16261253334 is an abundant number, since it is smaller than the sum of its proper divisors (20543291946).

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

16261253334 is an equidigital number, since it uses as much as digits as its factorization.

16261253334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71216 (or 71201 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

Adding to 16261253334 its reverse (43335216261), we get a palindrome (59596469595).

The spelling of 16261253334 in words is "sixteen billion, two hundred sixty-one million, two hundred fifty-three thousand, three hundred thirty-four".