10978990380 has 144 divisors (see below), whose sum is σ = 35109494784. Its totient is φ = 2772938880.

The previous prime is 10978990367. The next prime is 10978990459. The reversal of 10978990380 is 8309987901.

10978990380 is a `hidden beast` number, since 10 + 97 + 89 + 90 + 380 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 241329 + ... + 283191.

It is an arithmetic number, because the mean of its divisors is an integer number (243815936).

Almost surely, 2^10978990380 is an apocalyptic number.

10978990380 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 10978990380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17554747392).

10978990380 is an abundant number, since it is smaller than the sum of its proper divisors (24130504404).

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

10978990380 is a wasteful number, since it uses less digits than its factorization.

10978990380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41956 (or 41951 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 10978990380 in words is "ten billion, nine hundred seventy-eight million, nine hundred ninety thousand, three hundred eighty".