3609029915868 has 192 divisors, whose sum is σ = 9837041905152. Its totient is φ = 1019656028160.

The previous prime is 3609029915867. The next prime is 3609029915969. The reversal of 3609029915868 is 8685199209063.

It is a junction number, because it is equal to n+sod(n) for n = 3609029915799 and 3609029915808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3609029915867) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100447755 + ... + 100483677.

It is an arithmetic number, because the mean of its divisors is an integer number (51234593256).

Almost surely, 2^{3609029915868} 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 3609029915868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4918520952576).

3609029915868 is an abundant number, since it is smaller than the sum of its proper divisors (6228011989284).

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

3609029915868 is a wasteful number, since it uses less digits than its factorization.

3609029915868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36884 (or 36882 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 66.

The spelling of 3609029915868 in words is "three trillion, six hundred nine billion, twenty-nine million, nine hundred fifteen thousand, eight hundred sixty-eight".