11672781880 has 64 divisors (see below), whose sum is σ = 27614973600. Its totient is φ = 4434178560.

The previous prime is 11672781823. The next prime is 11672781889. The reversal of 11672781880 is 8818727611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11672781889) 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, 11722 + ... + 153241.

Almost surely, 2^11672781880 is an apocalyptic number.

11672781880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11672781880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13807486800).

11672781880 is an abundant number, since it is smaller than the sum of its proper divisors (15942191720).

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

11672781880 is a wasteful number, since it uses less digits than its factorization.

11672781880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165064 (or 165060 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 49.

The spelling of 11672781880 in words is "eleven billion, six hundred seventy-two million, seven hundred eighty-one thousand, eight hundred eighty".