11999494115856 has 480 divisors, whose sum is σ = 38046861844992. Its totient is φ = 3502800322560.

The previous prime is 11999494115849. The next prime is 11999494115857. The reversal of 11999494115856 is 65851149499911.

11999494115856 is a `hidden beast` number, since 1 + 1 + 9 + 99 + 49 + 411 + 5 + 85 + 6 = 666.

It is a super-2 number, since 2×11999494115856² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (11999494115857) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2729016250 + ... + 2729020646.

Almost surely, 2^{11999494115856} is an apocalyptic number.

11999494115856 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 11999494115856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19023430922496).

11999494115856 is an abundant number, since it is smaller than the sum of its proper divisors (26047367729136).

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

11999494115856 is a wasteful number, since it uses less digits than its factorization.

11999494115856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4951 (or 4942 counting only the distinct ones).

The product of its digits is 125971200, while the sum is 72.

The spelling of 11999494115856 in words is "eleven trillion, nine hundred ninety-nine billion, four hundred ninety-four million, one hundred fifteen thousand, eight hundred fifty-six".