9009009009040 has 40 divisors (see below), whose sum is σ = 21621621627648. Its totient is φ = 3487358325120.

The previous prime is 9009009008981. The next prime is 9009009009041. The reversal of 9009009009040 is 409009009009.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 9009009008984 and 9009009009002.

It is not an unprimeable number, because it can be changed into a prime (9009009009041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1816329982 + ... + 1816334941.

Almost surely, 2^{9009009009040} is an apocalyptic number.

It is an amenable number.

9009009009040 is an abundant number, since it is smaller than the sum of its proper divisors (12612612618608).

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

9009009009040 is a wasteful number, since it uses less digits than its factorization.

9009009009040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632664967 (or 3632664961 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 40.

The spelling of 9009009009040 in words is "nine trillion, nine billion, nine million, nine thousand, forty".