26121393215 has 8 divisors (see below), whose sum is σ = 31346543808. Its totient is φ = 20896533280.

The previous prime is 26121393203. The next prime is 26121393253. The reversal of 26121393215 is 51239312162.

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

It is not a de Polignac number, because 26121393215 - 2²² = 26117198911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 286010 + ... + 366120.

It is an arithmetic number, because the mean of its divisors is an integer number (3918317976).

Almost surely, 2^26121393215 is an apocalyptic number.

26121393215 is a deficient number, since it is larger than the sum of its proper divisors (5225150593).

26121393215 is an equidigital number, since it uses as much as digits as its factorization.

26121393215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145329.

The product of its digits is 19440, while the sum is 35.

The spelling of 26121393215 in words is "twenty-six billion, one hundred twenty-one million, three hundred ninety-three thousand, two hundred fifteen".