26431262707 has 2 divisors, whose sum is σ = 26431262708.
Its totient is φ = 26431262706.
The previous prime is 26431262651. The next prime is 26431262723. The reversal of 26431262707 is 70726213462.
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 26431262707 - 211 = 26431260659 is a prime.
It is a super-2 number, since 2×264312627072 (a number of 22 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 26431262707.
It is not a weakly prime, because it can be changed into another prime (26431263707) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13215631353 + 13215631354.
It is an arithmetic number, because the mean of its divisors is an integer number (13215631354).
Almost surely, 226431262707 is an apocalyptic number.
26431262707 is a deficient number, since it is larger than the sum of its proper divisors (1).
26431262707 is an equidigital number, since it uses as much as digits as its factorization.
26431262707 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 169344, while the sum is 40.
The spelling of 26431262707 in words is "twenty-six billion, four hundred thirty-one million, two hundred sixty-two thousand, seven hundred seven".