1009990999001 has 16 divisors (see below), whose sum is σ = 1031936815104. Its totient is φ = 988273384704.

The previous prime is 1009990998953. The next prime is 1009990999007.

1009990999001 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1009990999001 - 2³⁰ = 1008917257177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1009990999007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16601300 + ... + 16662026.

It is an arithmetic number, because the mean of its divisors is an integer number (64496050944).

Almost surely, 2^{1009990999001} is an apocalyptic number.

It is an amenable number.

1009990999001 is a deficient number, since it is larger than the sum of its proper divisors (21945816103).

1009990999001 is a wasteful number, since it uses less digits than its factorization.

1009990999001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62600.

The product of its (nonzero) digits is 531441, while the sum is 56.

The spelling of 1009990999001 in words is "one trillion, nine billion, nine hundred ninety million, nine hundred ninety-nine thousand, one".