10091009002 has 4 divisors (see below), whose sum is σ = 15136513506. Its totient is φ = 5045504500.

The previous prime is 10091008999. The next prime is 10091009021. The reversal of 10091009002 is 20090019001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9987803721 + 103205281 = 99939^2 + 10159^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2522752249 + ... + 2522752252.

Almost surely, 2^10091009002 is an apocalyptic number.

10091009002 is a deficient number, since it is larger than the sum of its proper divisors (5045504504).

10091009002 is an equidigital number, since it uses as much as digits as its factorization.

10091009002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5045504503.

The product of its (nonzero) digits is 162, while the sum is 22.

Subtracting 10091009002 from its reverse (20090019001), we obtain a palindrome (9999009999).

The spelling of 10091009002 in words is "ten billion, ninety-one million, nine thousand, two".