11980031896 has 32 divisors (see below), whose sum is σ = 26787651840. Its totient is φ = 4911068448.

The previous prime is 11980031893. The next prime is 11980031923. The reversal of 11980031896 is 69813008911.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11980031891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4649346 + ... + 4651921.

It is an arithmetic number, because the mean of its divisors is an integer number (837114120).

Almost surely, 2^11980031896 is an apocalyptic number.

It is an amenable number.

11980031896 is an abundant number, since it is smaller than the sum of its proper divisors (14807619944).

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

11980031896 is a wasteful number, since it uses less digits than its factorization.

11980031896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9301303 (or 9301299 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 46.

The spelling of 11980031896 in words is "eleven billion, nine hundred eighty million, thirty-one thousand, eight hundred ninety-six".