26643488434662 has 32 divisors (see below), whose sum is σ = 58147231313664. Its totient is φ = 8071564399200.

The previous prime is 26643488434621. The next prime is 26643488434813.

It is a happy number.

26643488434662 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 26643488434593 and 26643488434602.

It is a congruent number.

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, 55257514 + ... + 55737597.

It is an arithmetic number, because the mean of its divisors is an integer number (1817100978552).

Almost surely, 2^{26643488434662} is an apocalyptic number.

26643488434662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

26643488434662 is an abundant number, since it is smaller than the sum of its proper divisors (31503742879002).

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

26643488434662 is a wasteful number, since it uses less digits than its factorization.

26643488434662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110998764.

The product of its digits is 764411904, while the sum is 66.

The spelling of 26643488434662 in words is "twenty-six trillion, six hundred forty-three billion, four hundred eighty-eight million, four hundred thirty-four thousand, six hundred sixty-two".