10821491712 has 264 divisors, whose sum is σ = 33338260800. Its totient is φ = 3380772864.

The previous prime is 10821491699. The next prime is 10821491731. The reversal of 10821491712 is 21719412801.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45278089 + ... + 45278327.

Almost surely, 2^10821491712 is an apocalyptic number.

10821491712 is a gapful number since it is divisible by the number (12) 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 10821491712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16669130400).

10821491712 is an abundant number, since it is smaller than the sum of its proper divisors (22516769088).

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

10821491712 is an equidigital number, since it uses as much as digits as its factorization.

10821491712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 10821491712 in words is "ten billion, eight hundred twenty-one million, four hundred ninety-one thousand, seven hundred twelve".