11605201640 has 64 divisors (see below), whose sum is σ = 27831029760. Its totient is φ = 4340044800.

The previous prime is 11605201639. The next prime is 11605201661. The reversal of 11605201640 is 4610250611.

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, 46169 + ... + 159191.

It is an arithmetic number, because the mean of its divisors is an integer number (434859840).

Almost surely, 2^11605201640 is an apocalyptic number.

11605201640 is a gapful number since it is divisible by the number (10) 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 11605201640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13915514880).

11605201640 is an abundant number, since it is smaller than the sum of its proper divisors (16225828120).

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

11605201640 is a wasteful number, since it uses less digits than its factorization.

11605201640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113202 (or 113198 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 11605201640 in words is "eleven billion, six hundred five million, two hundred one thousand, six hundred forty".