11603638650 has 24 divisors (see below), whose sum is σ = 28777024224. Its totient is φ = 3094303600.

The previous prime is 11603638649. The next prime is 11603638691. The reversal of 11603638650 is 5683630611.

It is a junction number, because it is equal to n+sod(n) for n = 11603638599 and 11603638608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38678646 + ... + 38678945.

It is an arithmetic number, because the mean of its divisors is an integer number (1199042676).

Almost surely, 2^11603638650 is an apocalyptic number.

11603638650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11603638650 is an abundant number, since it is smaller than the sum of its proper divisors (17173385574).

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

11603638650 is a wasteful number, since it uses less digits than its factorization.

11603638650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77357606 (or 77357601 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 11603638650 in words is "eleven billion, six hundred three million, six hundred thirty-eight thousand, six hundred fifty".