26213270232431 has 4 divisors (see below), whose sum is σ = 26214438768672. Its totient is φ = 26212101696192.

The previous prime is 26213270232389. The next prime is 26213270232473. The reversal of 26213270232431 is 13423207231262.

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

It is an interprime number because it is at equal distance from previous prime (26213270232389) and next prime (26213270232473).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26213270232431 is a prime.

It is a super-2 number, since 2×26213270232431² (a number of 28 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 (26213270232931) 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, 584234471 + ... + 584279336.

It is an arithmetic number, because the mean of its divisors is an integer number (6553609692168).

Almost surely, 2^{26213270232431} is an apocalyptic number.

26213270232431 is a deficient number, since it is larger than the sum of its proper divisors (1168536241).

26213270232431 is a wasteful number, since it uses less digits than its factorization.

26213270232431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168536240.

The product of its (nonzero) digits is 145152, while the sum is 38.

Adding to 26213270232431 its reverse (13423207231262), we get a palindrome (39636477463693).

The spelling of 26213270232431 in words is "twenty-six trillion, two hundred thirteen billion, two hundred seventy million, two hundred thirty-two thousand, four hundred thirty-one".