11906342856 has 192 divisors, whose sum is σ = 35223552000. Its totient is φ = 3619416960.

The previous prime is 11906342849. The next prime is 11906342857. The reversal of 11906342856 is 65824360911.

11906342856 is a `hidden beast` number, since 1 + 1 + 9 + 0 + 634 + 2 + 8 + 5 + 6 = 666.

It is a super-2 number, since 2×11906342856² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11906342857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9456355 + ... + 9457613.

It is an arithmetic number, because the mean of its divisors is an integer number (183456000).

Almost surely, 2^11906342856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11906342856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17611776000).

11906342856 is an abundant number, since it is smaller than the sum of its proper divisors (23317209144).

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

11906342856 is a wasteful number, since it uses less digits than its factorization.

11906342856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 11906342856 in words is "eleven billion, nine hundred six million, three hundred forty-two thousand, eight hundred fifty-six".