10521517140 has 192 divisors, whose sum is σ = 34534886400. Its totient is φ = 2652020352.

The previous prime is 10521517109. The next prime is 10521517147. The reversal of 10521517140 is 4171512501.

10521517140 is a `hidden beast` number, since 1 + 0 + 5 + 2 + 1 + 517 + 140 = 666.

It is a super-2 number, since 2×10521517140² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521517147) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6021747 + ... + 6023493.

It is an arithmetic number, because the mean of its divisors is an integer number (179869200).

Almost surely, 2^10521517140 is an apocalyptic number.

10521517140 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 10521517140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17267443200).

10521517140 is an abundant number, since it is smaller than the sum of its proper divisors (24013369260).

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

10521517140 is a wasteful number, since it uses less digits than its factorization.

10521517140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371 (or 2363 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The spelling of 10521517140 in words is "ten billion, five hundred twenty-one million, five hundred seventeen thousand, one hundred forty".