10261581563 has 8 divisors (see below), whose sum is σ = 10309362096. Its totient is φ = 10213912800.

The previous prime is 10261581461. The next prime is 10261581571. The reversal of 10261581563 is 36518516201.

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

It is a cyclic number.

It is not a de Polignac number, because 10261581563 - 2¹⁴ = 10261565179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10261581593) 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, 158993 + ... + 214013.

It is an arithmetic number, because the mean of its divisors is an integer number (1288670262).

Almost surely, 2^10261581563 is an apocalyptic number.

10261581563 is a deficient number, since it is larger than the sum of its proper divisors (47780533).

10261581563 is an equidigital number, since it uses as much as digits as its factorization.

10261581563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55885.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 10261581563 in words is "ten billion, two hundred sixty-one million, five hundred eighty-one thousand, five hundred sixty-three".