26431263101 has 4 divisors (see below), whose sum is σ = 26541854400. Its totient is φ = 26320671804.

The previous prime is 26431263097. The next prime is 26431263107. The reversal of 26431263101 is 10136213462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26431263101 - 2² = 26431263097 is a prime.

It is a super-2 number, since 2×26431263101² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26431263107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55295291 + ... + 55295768.

It is an arithmetic number, because the mean of its divisors is an integer number (6635463600).

Almost surely, 2^26431263101 is an apocalyptic number.

It is an amenable number.

26431263101 is a deficient number, since it is larger than the sum of its proper divisors (110591299).

26431263101 is a wasteful number, since it uses less digits than its factorization.

26431263101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110591298.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 26431263101 its reverse (10136213462), we get a palindrome (36567476563).

The spelling of 26431263101 in words is "twenty-six billion, four hundred thirty-one million, two hundred sixty-three thousand, one hundred one".