11620665600 has 216 divisors, whose sum is σ = 38880657312. Its totient is φ = 3056025600.

The previous prime is 11620665509. The next prime is 11620665631. The reversal of 11620665600 is 656602611.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1397455 + ... + 1405745.

Almost surely, 2^11620665600 is an apocalyptic number.

11620665600 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 11620665600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19440328656).

11620665600 is an abundant number, since it is smaller than the sum of its proper divisors (27259991712).

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

11620665600 is an equidigital number, since it uses as much as digits as its factorization.

11620665600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8393 (or 8374 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 11620665600 in words is "eleven billion, six hundred twenty million, six hundred sixty-five thousand, six hundred".