26436634426 has 8 divisors (see below), whose sum is σ = 39656503764. Its totient is φ = 13217799840.

The previous prime is 26436634423. The next prime is 26436634453. The reversal of 26436634426 is 62443663462.

It can be written as a sum of positive squares in 2 ways, for example, as 23058118801 + 3378515625 = 151849^2 + 58125^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (26436634423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191305 + ... + 299116.

Almost surely, 2^26436634426 is an apocalyptic number.

26436634426 is a deficient number, since it is larger than the sum of its proper divisors (13219869338).

26436634426 is a wasteful number, since it uses less digits than its factorization.

26436634426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517376.

The product of its digits is 2985984, while the sum is 46.

The spelling of 26436634426 in words is "twenty-six billion, four hundred thirty-six million, six hundred thirty-four thousand, four hundred twenty-six".