26195891950 has 12 divisors (see below), whose sum is σ = 48724359120. Its totient is φ = 10478356760.

The previous prime is 26195891921. The next prime is 26195891959. The reversal of 26195891950 is 5919859162.

It is a junction number, because it is equal to n+sod(n) for n = 26195891891 and 26195891900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26195891959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 261958870 + ... + 261958969.

It is an arithmetic number, because the mean of its divisors is an integer number (4060363260).

Almost surely, 2^26195891950 is an apocalyptic number.

26195891950 is a deficient number, since it is larger than the sum of its proper divisors (22528467170).

26195891950 is a wasteful number, since it uses less digits than its factorization.

26195891950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523917851 (or 523917846 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 55.

The spelling of 26195891950 in words is "twenty-six billion, one hundred ninety-five million, eight hundred ninety-one thousand, nine hundred fifty".