10001000009940 has 48 divisors (see below), whose sum is σ = 28654027942848. Its totient is φ = 2604911629824.

The previous prime is 10001000009939. The next prime is 10001000010017. The reversal of 10001000009940 is 4990000010001.

It is a self number, because there is not a number n which added to its sum of digits gives 10001000009940.

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, 1938175717 + ... + 1938180876.

It is an arithmetic number, because the mean of its divisors is an integer number (596958915476).

Almost surely, 2^{10001000009940} is an apocalyptic number.

10001000009940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001000009940 is an abundant number, since it is smaller than the sum of its proper divisors (18653027932908).

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

10001000009940 is a wasteful number, since it uses less digits than its factorization.

10001000009940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876356648 (or 3876356646 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

Adding to 10001000009940 its reverse (4990000010001), we get a palindrome (14991000019941).

The spelling of 10001000009940 in words is "ten trillion, one billion, nine thousand, nine hundred forty".