26191679893 has 8 divisors (see below), whose sum is σ = 27370017216. Its totient is φ = 25016640000.

The previous prime is 26191679887. The next prime is 26191679897. The reversal of 26191679893 is 39897619162.

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

It is not a de Polignac number, because 26191679893 - 2¹⁷ = 26191548821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26191679897) 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, 808108 + ... + 839893.

It is an arithmetic number, because the mean of its divisors is an integer number (3421252152).

Almost surely, 2^26191679893 is an apocalyptic number.

26191679893 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

26191679893 is a deficient number, since it is larger than the sum of its proper divisors (1178337323).

26191679893 is a wasteful number, since it uses less digits than its factorization.

26191679893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648715.

The product of its digits is 8817984, while the sum is 61.

The spelling of 26191679893 in words is "twenty-six billion, one hundred ninety-one million, six hundred seventy-nine thousand, eight hundred ninety-three".