10656087220 has 192 divisors, whose sum is σ = 25639649280. Its totient is φ = 3697993728.

The previous prime is 10656087179. The next prime is 10656087229. The reversal of 10656087220 is 2278065601.

It is a happy number.

It is a super-2 number, since 2×10656087220² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10656087220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10656087229) 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, 29035477 + ... + 29035843.

It is an arithmetic number, because the mean of its divisors is an integer number (133539840).

Almost surely, 2^10656087220 is an apocalyptic number.

10656087220 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 10656087220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12819824640).

10656087220 is an abundant number, since it is smaller than the sum of its proper divisors (14983562060).

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

10656087220 is a wasteful number, since it uses less digits than its factorization.

10656087220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 10656087220 in words is "ten billion, six hundred fifty-six million, eighty-seven thousand, two hundred twenty".