11650636217040 has 80 divisors (see below), whose sum is σ = 37093106686848. Its totient is φ = 3022867772928.

The previous prime is 11650636217039. The next prime is 11650636217041. The reversal of 11650636217040 is 4071263605611.

It is an interprime number because it is at equal distance from previous prime (11650636217039) and next prime (11650636217041).

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 11650636216983 and 11650636217001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11650636217041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655995412 + ... + 656013171.

Almost surely, 2^{11650636217040} is an apocalyptic number.

11650636217040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11650636217040 is an abundant number, since it is smaller than the sum of its proper divisors (25442470469808).

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

11650636217040 is a wasteful number, since it uses less digits than its factorization.

11650636217040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312008636 (or 1312008630 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 11650636217040 in words is "eleven trillion, six hundred fifty billion, six hundred thirty-six million, two hundred seventeen thousand, forty".