26808879531 has 8 divisors (see below), whose sum is σ = 40851625984. Its totient is φ = 15319359720.

The previous prime is 26808879481. The next prime is 26808879533. The reversal of 26808879531 is 13597880862.

It is a happy number.

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

It is not a de Polignac number, because 26808879531 - 2⁶ = 26808879467 is a prime.

It is a super-2 number, since 2×26808879531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26808879533) 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, 638306635 + ... + 638306676.

It is an arithmetic number, because the mean of its divisors is an integer number (5106453248).

Almost surely, 2^26808879531 is an apocalyptic number.

26808879531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26808879531 is a deficient number, since it is larger than the sum of its proper divisors (14042746453).

26808879531 is a wasteful number, since it uses less digits than its factorization.

26808879531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276613321.

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 26808879531 in words is "twenty-six billion, eight hundred eight million, eight hundred seventy-nine thousand, five hundred thirty-one".