26171004563 has 16 divisors (see below), whose sum is σ = 28724125824. Its totient is φ = 23647229760.

The previous prime is 26171004553. The next prime is 26171004571. The reversal of 26171004563 is 36540017162.

It is not a de Polignac number, because 26171004563 - 2¹² = 26171000467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26171004553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1532156 + ... + 1549142.

It is an arithmetic number, because the mean of its divisors is an integer number (1795257864).

Almost surely, 2^26171004563 is an apocalyptic number.

26171004563 is a deficient number, since it is larger than the sum of its proper divisors (2553121261).

26171004563 is a wasteful number, since it uses less digits than its factorization.

26171004563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17842.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 26171004563 in words is "twenty-six billion, one hundred seventy-one million, four thousand, five hundred sixty-three".