26613564878 has 8 divisors (see below), whose sum is σ = 39921222720. Its totient is φ = 13306490640.

The previous prime is 26613564871. The next prime is 26613564919. The reversal of 26613564878 is 87846531662.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26613564871) 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 3 ways as a sum of consecutive naturals, for example, 4478 + ... + 230753.

It is an arithmetic number, because the mean of its divisors is an integer number (4990152840).

Almost surely, 2^26613564878 is an apocalyptic number.

26613564878 is a deficient number, since it is larger than the sum of its proper divisors (13307657842).

26613564878 is a wasteful number, since it uses less digits than its factorization.

26613564878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291802.

The product of its digits is 11612160, while the sum is 56.

The spelling of 26613564878 in words is "twenty-six billion, six hundred thirteen million, five hundred sixty-four thousand, eight hundred seventy-eight".