11771404078 has 24 divisors (see below), whose sum is σ = 21436414992. Its totient is φ = 4748127744.

The previous prime is 11771404049. The next prime is 11771404079. The reversal of 11771404078 is 87040417711.

It is a self number, because there is not a number n which added to its sum of digits gives 11771404078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11771404079) 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, 1450651 + ... + 1458742.

It is an arithmetic number, because the mean of its divisors is an integer number (893183958).

Almost surely, 2^11771404078 is an apocalyptic number.

11771404078 is a deficient number, since it is larger than the sum of its proper divisors (9665010914).

11771404078 is a wasteful number, since it uses less digits than its factorization.

11771404078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909436 (or 2909419 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 40.

The spelling of 11771404078 in words is "eleven billion, seven hundred seventy-one million, four hundred four thousand, seventy-eight".