26406702420605 has 24 divisors (see below), whose sum is σ = 34511429618568. Its totient is φ = 19387615293696.

The previous prime is 26406702420587. The next prime is 26406702420611. The reversal of 26406702420605 is 50602420760462.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 16416418751524 + 9990283669081 = 4051718^2 + 3160741^2 .

It is not a de Polignac number, because 26406702420605 - 2¹² = 26406702416509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90173282 + ... + 90465651.

It is an arithmetic number, because the mean of its divisors is an integer number (1437976234107).

Almost surely, 2^{26406702420605} is an apocalyptic number.

It is an amenable number.

26406702420605 is a deficient number, since it is larger than the sum of its proper divisors (8104727197963).

26406702420605 is a wasteful number, since it uses less digits than its factorization.

26406702420605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180639137 (or 180639124 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 26406702420605 in words is "twenty-six trillion, four hundred six billion, seven hundred two million, four hundred twenty thousand, six hundred five".