4063635640 has 64 divisors (see below), whose sum is σ = 9683740800. Its totient is φ = 1530410112.

The previous prime is 4063635629. The next prime is 4063635677. The reversal of 4063635640 is 465363604.

It is a super-2 number, since 2×4063635640² = 33026269229356419200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4063635640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107479 + ... + 140281.

It is an arithmetic number, because the mean of its divisors is an integer number (151308450).

Almost surely, 2^4063635640 is an apocalyptic number.

4063635640 is a gapful number since it is divisible by the number (40) 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 4063635640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4841870400).

4063635640 is an abundant number, since it is smaller than the sum of its proper divisors (5620105160).

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

4063635640 is a wasteful number, since it uses less digits than its factorization.

4063635640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32996 (or 32992 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 37.

The square root of 4063635640 is about 63746.6519905163. The cubic root of 4063635640 is about 1595.7747424461.

The spelling of 4063635640 in words is "four billion, sixty-three million, six hundred thirty-five thousand, six hundred forty".