11771040880 has 40 divisors (see below), whose sum is σ = 28107343872. Its totient is φ = 4581160704.

The previous prime is 11771040851. The next prime is 11771040881. The reversal of 11771040880 is 8804017711.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11771040881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1985392 + ... + 1991311.

Almost surely, 2^11771040880 is an apocalyptic number.

11771040880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11771040880 is an abundant number, since it is smaller than the sum of its proper divisors (16336302992).

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

11771040880 is a wasteful number, since it uses less digits than its factorization.

11771040880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976753 (or 3976747 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 37.

The spelling of 11771040880 in words is "eleven billion, seven hundred seventy-one million, forty thousand, eight hundred eighty".