11920842776 has 64 divisors (see below), whose sum is σ = 24433920000. Its totient is φ = 5434805376.

The previous prime is 11920842767. The next prime is 11920842811. The reversal of 11920842776 is 67724802911.

It is a super-2 number, since 2×11920842776² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11920842776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407405 + ... + 435683.

It is an arithmetic number, because the mean of its divisors is an integer number (381780000).

Almost surely, 2^11920842776 is an apocalyptic number.

It is an amenable number.

11920842776 is an abundant number, since it is smaller than the sum of its proper divisors (12513077224).

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

11920842776 is a wasteful number, since it uses less digits than its factorization.

11920842776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28416 (or 28412 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 11920842776 in words is "eleven billion, nine hundred twenty million, eight hundred forty-two thousand, seven hundred seventy-six".