10215781063 has 4 divisors (see below), whose sum is σ = 10216207728. Its totient is φ = 10215354400.

The previous prime is 10215781057. The next prime is 10215781087. The reversal of 10215781063 is 36018751201.

It is a happy number.

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 10215781063 - 2¹³ = 10215772871 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 (10215781003) 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, 175138 + ... + 226063.

It is an arithmetic number, because the mean of its divisors is an integer number (2554051932).

Almost surely, 2^10215781063 is an apocalyptic number.

10215781063 is a deficient number, since it is larger than the sum of its proper divisors (426665).

10215781063 is an equidigital number, since it uses as much as digits as its factorization.

10215781063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426664.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 10215781063 in words is "ten billion, two hundred fifteen million, seven hundred eighty-one thousand, sixty-three".