10785722217 has 4 divisors (see below), whose sum is σ = 14380962960. Its totient is φ = 7190481476.

The previous prime is 10785722201. The next prime is 10785722219. The reversal of 10785722217 is 71222758701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71222758701 = 3 ⋅23740919567.

It is a cyclic number.

It is not a de Polignac number, because 10785722217 - 2⁴ = 10785722201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10785722219) 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, 1797620367 + ... + 1797620372.

It is an arithmetic number, because the mean of its divisors is an integer number (3595240740).

Almost surely, 2^10785722217 is an apocalyptic number.

It is an amenable number.

10785722217 is a deficient number, since it is larger than the sum of its proper divisors (3595240743).

10785722217 is an equidigital number, since it uses as much as digits as its factorization.

10785722217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3595240742.

The product of its (nonzero) digits is 109760, while the sum is 42.

The spelling of 10785722217 in words is "ten billion, seven hundred eighty-five million, seven hundred twenty-two thousand, two hundred seventeen".