10321355550 has 96 divisors (see below), whose sum is σ = 28382004864. Its totient is φ = 2461104000.

The previous prime is 10321355509. The next prime is 10321355557. The reversal of 10321355550 is 5555312301.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10321355557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49377 + ... + 151923.

It is an arithmetic number, because the mean of its divisors is an integer number (295645884).

Almost surely, 2^10321355550 is an apocalyptic number.

10321355550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10321355550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14191002432).

10321355550 is an abundant number, since it is smaller than the sum of its proper divisors (18060649314).

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

10321355550 is a wasteful number, since it uses less digits than its factorization.

10321355550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102634 (or 102629 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 30.

Adding to 10321355550 its reverse (5555312301), we get a palindrome (15876667851).

The spelling of 10321355550 in words is "ten billion, three hundred twenty-one million, three hundred fifty-five thousand, five hundred fifty".