10265721699 has 4 divisors (see below), whose sum is σ = 13687628936. Its totient is φ = 6843814464.

The previous prime is 10265721673. The next prime is 10265721701. The reversal of 10265721699 is 99612756201.

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

It is not a de Polignac number, because 10265721699 - 2⁸ = 10265721443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10265721649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1710953614 + ... + 1710953619.

It is an arithmetic number, because the mean of its divisors is an integer number (3421907234).

Almost surely, 2^10265721699 is an apocalyptic number.

10265721699 is a deficient number, since it is larger than the sum of its proper divisors (3421907237).

10265721699 is an equidigital number, since it uses as much as digits as its factorization.

10265721699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421907236.

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 10265721699 in words is "ten billion, two hundred sixty-five million, seven hundred twenty-one thousand, six hundred ninety-nine".