26405744234 has 4 divisors (see below), whose sum is σ = 39608616354. Its totient is φ = 13202872116.

The previous prime is 26405744227. The next prime is 26405744249. The reversal of 26405744234 is 43244750462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26405275009 + 469225 = 162497^2 + 685^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26405744191 and 26405744200.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6601436057 + ... + 6601436060.

Almost surely, 2^26405744234 is an apocalyptic number.

26405744234 is a deficient number, since it is larger than the sum of its proper divisors (13202872120).

26405744234 is a wasteful number, since it uses less digits than its factorization.

26405744234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13202872119.

The product of its (nonzero) digits is 645120, while the sum is 41.

The spelling of 26405744234 in words is "twenty-six billion, four hundred five million, seven hundred forty-four thousand, two hundred thirty-four".