11711678880 has 96 divisors (see below), whose sum is σ = 40245605568. Its totient is φ = 2839193600.

The previous prime is 11711678863. The next prime is 11711678887. The reversal of 11711678880 is 8887611711.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (11711678887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1103781 + ... + 1114340.

It is an arithmetic number, because the mean of its divisors is an integer number (419225058).

Almost surely, 2^11711678880 is an apocalyptic number.

11711678880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11711678880 is an abundant number, since it is smaller than the sum of its proper divisors (28533926688).

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

11711678880 is a wasteful number, since it uses less digits than its factorization.

11711678880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218150 (or 2218142 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 48.

The spelling of 11711678880 in words is "eleven billion, seven hundred eleven million, six hundred seventy-eight thousand, eight hundred eighty".