10921089816 has 1024 divisors, whose sum is σ = 43545600000. Its totient is φ = 2503581696.

The previous prime is 10921089761. The next prime is 10921089827. The reversal of 10921089816 is 61898012901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 376589290 + ... + 376589318.

It is an arithmetic number, because the mean of its divisors is an integer number (42525000).

Almost surely, 2^10921089816 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 10921089816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21772800000).

10921089816 is an abundant number, since it is smaller than the sum of its proper divisors (32624510184).

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

10921089816 is a wasteful number, since it uses less digits than its factorization.

10921089816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The spelling of 10921089816 in words is "ten billion, nine hundred twenty-one million, eighty-nine thousand, eight hundred sixteen".