10101020323440 has 160 divisors (see below), whose sum is σ = 31844646812160. Its totient is φ = 2648262693888.

The previous prime is 10101020323439. The next prime is 10101020323453. The reversal of 10101020323440 is 4432302010101.

It is a super-2 number, since 2×10101020323440² (a number of 27 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 31 ways as a sum of consecutive naturals, for example, 1966234 + ... + 4905926.

It is an arithmetic number, because the mean of its divisors is an integer number (199029042576).

Almost surely, 2^{10101020323440} is an apocalyptic number.

10101020323440 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 10101020323440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15922323406080).

10101020323440 is an abundant number, since it is smaller than the sum of its proper divisors (21743626488720).

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

10101020323440 is a wasteful number, since it uses less digits than its factorization.

10101020323440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939951 (or 2939945 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 10101020323440 its reverse (4432302010101), we get a palindrome (14533322333541).

The spelling of 10101020323440 in words is "ten trillion, one hundred one billion, twenty million, three hundred twenty-three thousand, four hundred forty".