11778455672 has 16 divisors (see below), whose sum is σ = 22087407240. Its totient is φ = 5888480416.

The previous prime is 11778455669. The next prime is 11778455683. The reversal of 11778455672 is 27655487711.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23363 + ... + 155250.

Almost surely, 2^11778455672 is an apocalyptic number.

It is an amenable number.

11778455672 is a deficient number, since it is larger than the sum of its proper divisors (10308951568).

11778455672 is a wasteful number, since it uses less digits than its factorization.

11778455672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186862 (or 186858 counting only the distinct ones).

The product of its digits is 3292800, while the sum is 53.

The spelling of 11778455672 in words is "eleven billion, seven hundred seventy-eight million, four hundred fifty-five thousand, six hundred seventy-two".