26401426215 has 16 divisors (see below), whose sum is σ = 42410583936. Its totient is φ = 14024660000.

The previous prime is 26401426211. The next prime is 26401426223. The reversal of 26401426215 is 51262410462.

It is not a de Polignac number, because 26401426215 - 2² = 26401426211 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26401426211) 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, 3502401 + ... + 3509930.

It is an arithmetic number, because the mean of its divisors is an integer number (2650661496).

Almost surely, 2^26401426215 is an apocalyptic number.

26401426215 is a deficient number, since it is larger than the sum of its proper divisors (16009157721).

26401426215 is a wasteful number, since it uses less digits than its factorization.

26401426215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7012590.

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 26401426215 its reverse (51262410462), we get a palindrome (77663836677).

The spelling of 26401426215 in words is "twenty-six billion, four hundred one million, four hundred twenty-six thousand, two hundred fifteen".