10009681391 has 4 divisors (see below), whose sum is σ = 10015950792. Its totient is φ = 10003411992.

The previous prime is 10009681369. The next prime is 10009681433. The reversal of 10009681391 is 19318690001.

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

It is a cyclic number.

It is not a de Polignac number, because 10009681391 - 2¹⁰ = 10009680367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10009681301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3132305 + ... + 3135498.

It is an arithmetic number, because the mean of its divisors is an integer number (2503987698).

Almost surely, 2^10009681391 is an apocalyptic number.

10009681391 is a deficient number, since it is larger than the sum of its proper divisors (6269401).

10009681391 is an equidigital number, since it uses as much as digits as its factorization.

10009681391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6269400.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 10009681391 in words is "ten billion, nine million, six hundred eighty-one thousand, three hundred ninety-one".