10421263865 has 8 divisors (see below), whose sum is σ = 12510112128. Its totient is φ = 8333947440.

The previous prime is 10421263771. The next prime is 10421263873. The reversal of 10421263865 is 56836212401.

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

It is not a de Polignac number, because 10421263865 - 2¹⁴ = 10421247481 is a prime.

It is a super-3 number, since 3×10421263865³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367937 + ... + 395246.

It is an arithmetic number, because the mean of its divisors is an integer number (1563764016).

Almost surely, 2^10421263865 is an apocalyptic number.

It is an amenable number.

10421263865 is a deficient number, since it is larger than the sum of its proper divisors (2088848263).

10421263865 is an equidigital number, since it uses as much as digits as its factorization.

10421263865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765919.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 10421263865 in words is "ten billion, four hundred twenty-one million, two hundred sixty-three thousand, eight hundred sixty-five".