10555215320 has 64 divisors (see below), whose sum is σ = 25614731520. Its totient is φ = 3891423744.

The previous prime is 10555215313. The next prime is 10555215379. The reversal of 10555215320 is 2351255501.

It is a super-2 number, since 2×10555215320² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337049 + ... + 367031.

It is an arithmetic number, because the mean of its divisors is an integer number (400230180).

Almost surely, 2^10555215320 is an apocalyptic number.

10555215320 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 10555215320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12807365760).

10555215320 is an abundant number, since it is smaller than the sum of its proper divisors (15059516200).

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

10555215320 is a wasteful number, since it uses less digits than its factorization.

10555215320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30684 (or 30680 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 10555215320 in words is "ten billion, five hundred fifty-five million, two hundred fifteen thousand, three hundred twenty".