10981478508 has 192 divisors, whose sum is σ = 36427926528. Its totient is φ = 2477998080.

The previous prime is 10981478489. The next prime is 10981478537. The reversal of 10981478508 is 80587418901.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 177316 + ... + 231092.

It is an arithmetic number, because the mean of its divisors is an integer number (189728784).

Almost surely, 2^10981478508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10981478508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18213963264).

10981478508 is an abundant number, since it is smaller than the sum of its proper divisors (25446448020).

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

10981478508 is a wasteful number, since it uses less digits than its factorization.

10981478508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53832 (or 53830 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 51.

The spelling of 10981478508 in words is "ten billion, nine hundred eighty-one million, four hundred seventy-eight thousand, five hundred eight".