10856537909 has 8 divisors (see below), whose sum is σ = 13137323328. Its totient is φ = 8758215360.

The previous prime is 10856537899. The next prime is 10856537917. The reversal of 10856537909 is 90973565801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10856537909 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 (10856531909) 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, 45615587 + ... + 45615824.

It is an arithmetic number, because the mean of its divisors is an integer number (1642165416).

Almost surely, 2^10856537909 is an apocalyptic number.

It is an amenable number.

10856537909 is a deficient number, since it is larger than the sum of its proper divisors (2280785419).

10856537909 is an equidigital number, since it uses as much as digits as its factorization.

10856537909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91231435.

The product of its (nonzero) digits is 2041200, while the sum is 53.

The spelling of 10856537909 in words is "ten billion, eight hundred fifty-six million, five hundred thirty-seven thousand, nine hundred nine".