10001001010000 has 400 divisors, whose sum is σ = 32510363453568. Its totient is φ = 2877408000000.

The previous prime is 10001001009977. The next prime is 10001001010001. The reversal of 10001001010000 is 1010010001.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001001010001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9510450 + ... + 10509550.

Almost surely, 2^{10001001010000} is an apocalyptic number.

10001001010000 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 10001001010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16255181726784).

10001001010000 is an abundant number, since it is smaller than the sum of its proper divisors (22509362443568).

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

10001001010000 is a wasteful number, since it uses less digits than its factorization.

10001001010000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999160 (or 999139 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 4.

Adding to 10001001010000 its reverse (1010010001), we get a palindrome (10002011020001).

Subtracting from 10001001010000 its reverse (1010010001), we obtain a palindrome (9999990999999).

The spelling of 10001001010000 in words is "ten trillion, one billion, one million, ten thousand".