26864019931 has 8 divisors (see below), whose sum is σ = 30710759904. Its totient is φ = 23019535680.

The previous prime is 26864019913. The next prime is 26864019961. The reversal of 26864019931 is 13991046862.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 26864019931 - 2⁹ = 26864019419 is a prime.

It is a super-2 number, since 2×26864019931² (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 (26864019961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538330 + ... + 586111.

It is an arithmetic number, because the mean of its divisors is an integer number (3838844988).

Almost surely, 2^26864019931 is an apocalyptic number.

26864019931 is a deficient number, since it is larger than the sum of its proper divisors (3846739973).

26864019931 is a wasteful number, since it uses less digits than its factorization.

26864019931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127861.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 26864019931 in words is "twenty-six billion, eight hundred sixty-four million, nineteen thousand, nine hundred thirty-one".