2103808998636 has 288 divisors, whose sum is σ = 6037832586240. Its totient is φ = 614375258112.

The previous prime is 2103808998547. The next prime is 2103808998673. The reversal of 2103808998636 is 6368998083012.

2103808998636 is a `hidden beast` number, since 210 + 380 + 8 + 9 + 9 + 8 + 6 + 36 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 55869631 + ... + 55907273.

It is an arithmetic number, because the mean of its divisors is an integer number (20964696480).

Almost surely, 2^{2103808998636} 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 2103808998636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3018916293120).

2103808998636 is an abundant number, since it is smaller than the sum of its proper divisors (3934023587604).

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

2103808998636 is a wasteful number, since it uses less digits than its factorization.

2103808998636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37813 (or 37808 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 2103808998636 in words is "two trillion, one hundred three billion, eight hundred eight million, nine hundred ninety-eight thousand, six hundred thirty-six".