26819291862 has 128 divisors (see below), whose sum is σ = 67528857600. Its totient is φ = 7817990400.

The previous prime is 26819291861. The next prime is 26819291893.

It is a happy number.

26819291862 is a `hidden beast` number, since 268 + 19 + 291 + 86 + 2 = 666.

26819291862 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 = 26819291799 and 26819291808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26819291861) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1949187 + ... + 1962897.

It is an arithmetic number, because the mean of its divisors is an integer number (527569200).

Almost surely, 2^26819291862 is an apocalyptic number.

26819291862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 26819291862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33764428800).

26819291862 is an abundant number, since it is smaller than the sum of its proper divisors (40709565738).

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

26819291862 is a wasteful number, since it uses less digits than its factorization.

26819291862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13859 (or 13853 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The spelling of 26819291862 in words is "twenty-six billion, eight hundred nineteen million, two hundred ninety-one thousand, eight hundred sixty-two".