11778695856 has 60 divisors (see below), whose sum is σ = 33109296792. Its totient is φ = 3908924928.

The previous prime is 11778695849. The next prime is 11778695857. The reversal of 11778695856 is 65859687711.

It is a junction number, because it is equal to n+sod(n) for n = 11778695793 and 11778695802.

It is not an unprimeable number, because it can be changed into a prime (11778695857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147481 + ... + 212856.

Almost surely, 2^11778695856 is an apocalyptic number.

11778695856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11778695856 is an abundant number, since it is smaller than the sum of its proper divisors (21330600936).

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

11778695856 is a wasteful number, since it uses less digits than its factorization.

11778695856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360578 (or 360569 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 63.

The spelling of 11778695856 in words is "eleven billion, seven hundred seventy-eight million, six hundred ninety-five thousand, eight hundred fifty-six".