26405784413 has 16 divisors (see below), whose sum is σ = 28582189440. Its totient is φ = 24309720000.

The previous prime is 26405784397. The next prime is 26405784437. The reversal of 26405784413 is 31448750462.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 26405784413 - 2⁴ = 26405784397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26405780413) 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, 554288 + ... + 600038.

It is an arithmetic number, because the mean of its divisors is an integer number (1786386840).

Almost surely, 2^26405784413 is an apocalyptic number.

It is an amenable number.

26405784413 is a deficient number, since it is larger than the sum of its proper divisors (2176405027).

26405784413 is a wasteful number, since it uses less digits than its factorization.

26405784413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46628.

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 26405784413 in words is "twenty-six billion, four hundred five million, seven hundred eighty-four thousand, four hundred thirteen".