26946261287 has 8 divisors (see below), whose sum is σ = 29894158080. Its totient is φ = 24081403960.

The previous prime is 26946261253. The next prime is 26946261299. The reversal of 26946261287 is 78216264962.

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 26946261287 - 2³² = 22651293991 is a prime.

It is a super-2 number, since 2×26946261287² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26946261217) 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, 20759183 + ... + 20760480.

It is an arithmetic number, because the mean of its divisors is an integer number (3736769760).

Almost surely, 2^26946261287 is an apocalyptic number.

26946261287 is a deficient number, since it is larger than the sum of its proper divisors (2947896793).

26946261287 is a wasteful number, since it uses less digits than its factorization.

26946261287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41519733.

The product of its digits is 3483648, while the sum is 53.

The spelling of 26946261287 in words is "twenty-six billion, nine hundred forty-six million, two hundred sixty-one thousand, two hundred eighty-seven".