16159065840 has 200 divisors, whose sum is σ = 58563492768. Its totient is φ = 4121694720.

The previous prime is 16159065787. The next prime is 16159065889. The reversal of 16159065840 is 4856095161.

16159065840 = 26495² + 26496² + ... + 26517².

16159065840 is a `hidden beast` number, since 1 + 6 + 1 + 590 + 6 + 58 + 4 + 0 = 666.

It is a super-2 number, since 2×16159065840² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 94830 + ... + 203250.

Almost surely, 2^16159065840 is an apocalyptic number.

16159065840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16159065840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29281746384).

16159065840 is an abundant number, since it is smaller than the sum of its proper divisors (42404426928).

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

16159065840 is a wasteful number, since it uses less digits than its factorization.

16159065840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108469 (or 108454 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 16159065840 in words is "sixteen billion, one hundred fifty-nine million, sixty-five thousand, eight hundred forty".