26163903485 has 4 divisors (see below), whose sum is σ = 31396684188. Its totient is φ = 20931122784.

The previous prime is 26163903463. The next prime is 26163903523. The reversal of 26163903485 is 58430936162.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18988288804 + 7175614681 = 137798^2 + 84709^2 .

It is a cyclic number.

It is not a de Polignac number, because 26163903485 - 2⁶ = 26163903421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2616390344 + ... + 2616390353.

It is an arithmetic number, because the mean of its divisors is an integer number (7849171047).

Almost surely, 2^26163903485 is an apocalyptic number.

It is an amenable number.

26163903485 is a deficient number, since it is larger than the sum of its proper divisors (5232780703).

26163903485 is an equidigital number, since it uses as much as digits as its factorization.

26163903485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5232780702.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 26163903485 in words is "twenty-six billion, one hundred sixty-three million, nine hundred three thousand, four hundred eighty-five".