26861816862 has 32 divisors (see below), whose sum is σ = 60510646560. Its totient is φ = 8831280960.

The previous prime is 26861816857. The next prime is 26861816869.

26861816862 is a `hidden beast` number, since 2 + 6 + 8 + 618 + 16 + 8 + 6 + 2 = 666.

26861816862 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 26861816799 and 26861816808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26861816869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3403189 + ... + 3411072.

It is an arithmetic number, because the mean of its divisors is an integer number (1890957705).

Almost surely, 2^26861816862 is an apocalyptic number.

26861816862 is an abundant number, since it is smaller than the sum of its proper divisors (33648829698).

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

26861816862 is a wasteful number, since it uses less digits than its factorization.

26861816862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6814345 (or 6814339 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The spelling of 26861816862 in words is "twenty-six billion, eight hundred sixty-one million, eight hundred sixteen thousand, eight hundred sixty-two".