26861518674 has 32 divisors (see below), whose sum is σ = 59741619840. Its totient is φ = 8946436176.

The previous prime is 26861518613. The next prime is 26861518687. The reversal of 26861518674 is 47681516862.

26861518674 is a `hidden beast` number, since 2 + 6 + 8 + 61 + 518 + 67 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 26861518674.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139542 + ... + 270545.

It is an arithmetic number, because the mean of its divisors is an integer number (1866925620).

Almost surely, 2^26861518674 is an apocalyptic number.

26861518674 is an abundant number, since it is smaller than the sum of its proper divisors (32880101166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26861518674 is a wasteful number, since it uses less digits than its factorization.

26861518674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411311 (or 411305 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 26861518674 in words is "twenty-six billion, eight hundred sixty-one million, five hundred eighteen thousand, six hundred seventy-four".