4069581516 has 648 divisors, whose sum is σ = 15172348464. Its totient is φ = 905748480.

The previous prime is 4069581497. The next prime is 4069581539. The reversal of 4069581516 is 6151859604.

4069581516 is a `hidden beast` number, since 4 + 0 + 69 + 581 + 5 + 1 + 6 = 666.

It is a super-2 number, since 2×4069581516² = 33122987430737716512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 55747656 + ... + 55747728.

It is an arithmetic number, because the mean of its divisors is an integer number (23414118).

Almost surely, 2^4069581516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4069581516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7586174232).

4069581516 is an abundant number, since it is smaller than the sum of its proper divisors (11102766948).

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

4069581516 is a wasteful number, since it uses less digits than its factorization.

4069581516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 126 counting only the distinct ones).

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

The square root of 4069581516 is about 63793.2717141863. The cubic root of 4069581516 is about 1596.5526710154.

It can be divided in two parts, 4069 and 581516, that added together give a palindrome (585585).

The spelling of 4069581516 in words is "four billion, sixty-nine million, five hundred eighty-one thousand, five hundred sixteen".