26290317263 has 6 divisors (see below), whose sum is σ = 30582614016. Its totient is φ = 22534557612.

The previous prime is 26290317259. The next prime is 26290317269. The reversal of 26290317263 is 36271309262.

It is not a de Polignac number, because 26290317263 - 2² = 26290317259 is a prime.

It is a super-2 number, since 2×26290317263² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 26290317263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26290317269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268268495 + ... + 268268592.

It is an arithmetic number, because the mean of its divisors is an integer number (5097102336).

Almost surely, 2^26290317263 is an apocalyptic number.

26290317263 is a deficient number, since it is larger than the sum of its proper divisors (4292296753).

26290317263 is an equidigital number, since it uses as much as digits as its factorization.

26290317263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536537101 (or 536537094 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 41.

The spelling of 26290317263 in words is "twenty-six billion, two hundred ninety million, three hundred seventeen thousand, two hundred sixty-three".