11658788378560 has 56 divisors (see below), whose sum is σ = 28439623756656. Its totient is φ = 4549771069440.

The previous prime is 11658788378551. The next prime is 11658788378561. The reversal of 11658788378560 is 6587388785611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11658788378561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444300462 + ... + 444326701.

It is an arithmetic number, because the mean of its divisors is an integer number (507850424226).

Almost surely, 2^{11658788378560} is an apocalyptic number.

11658788378560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11658788378560 is an abundant number, since it is smaller than the sum of its proper divisors (16780835378096).

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

11658788378560 is an equidigital number, since it uses as much as digits as its factorization.

11658788378560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888627221 (or 888627211 counting only the distinct ones).

The product of its (nonzero) digits is 541900800, while the sum is 73.

The spelling of 11658788378560 in words is "eleven trillion, six hundred fifty-eight billion, seven hundred eighty-eight million, three hundred seventy-eight thousand, five hundred sixty".