26431262049 has 8 divisors (see below), whose sum is σ = 35325793440. Its totient is φ = 17578786016.

The previous prime is 26431262027. The next prime is 26431262051. The reversal of 26431262049 is 94026213462.

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

It is a cyclic number.

It is not a de Polignac number, because 26431262049 - 2⁸ = 26431261793 is a prime.

It is a super-2 number, since 2×26431262049² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26431261998 and 26431262016.

It is not an unprimeable number, because it can be changed into a prime (26431262009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10512372 + ... + 10514885.

It is an arithmetic number, because the mean of its divisors is an integer number (4415724180).

Almost surely, 2^26431262049 is an apocalyptic number.

It is an amenable number.

26431262049 is a deficient number, since it is larger than the sum of its proper divisors (8894531391).

26431262049 is a wasteful number, since it uses less digits than its factorization.

26431262049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21027679.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 26431262049 in words is "twenty-six billion, four hundred thirty-one million, two hundred sixty-two thousand, forty-nine".