11913571721376 has 192 divisors, whose sum is σ = 37517045529600. Its totient is φ = 3656289604608.

The previous prime is 11913571721371. The next prime is 11913571721407. The reversal of 11913571721376 is 67312717531911.

11913571721376 is a `hidden beast` number, since 1 + 1 + 9 + 1 + 357 + 1 + 7 + 213 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (11913571721371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3005905 + ... + 5732591.

It is an arithmetic number, because the mean of its divisors is an integer number (195401278800).

Almost surely, 2^{11913571721376} is an apocalyptic number.

11913571721376 is a gapful number since it is divisible by the number (16) 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 11913571721376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18758522764800).

11913571721376 is an abundant number, since it is smaller than the sum of its proper divisors (25603473808224).

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

11913571721376 is a wasteful number, since it uses less digits than its factorization.

11913571721376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727108 (or 2727094 counting only the distinct ones).

The product of its digits is 1666980, while the sum is 54.

The spelling of 11913571721376 in words is "eleven trillion, nine hundred thirteen billion, five hundred seventy-one million, seven hundred twenty-one thousand, three hundred seventy-six".