4068985536 has 448 divisors, whose sum is σ = 15221468160. Its totient is φ = 1035141120.

The previous prime is 4068985519. The next prime is 4068985607. The reversal of 4068985536 is 6355898604.

It is a happy number.

4068985536 is a `hidden beast` number, since 4 + 0 + 6 + 89 + 8 + 553 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7051680 + ... + 7052256.

Almost surely, 2^4068985536 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 4068985536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7610734080).

4068985536 is an abundant number, since it is smaller than the sum of its proper divisors (11152482624).

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

4068985536 is a wasteful number, since it uses less digits than its factorization.

4068985536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The square root of 4068985536 is about 63788.6003608795. The cubic root of 4068985536 is about 1596.4747301665.

The spelling of 4068985536 in words is "four billion, sixty-eight million, nine hundred eighty-five thousand, five hundred thirty-six".