26127780263 has 4 divisors (see below), whose sum is σ = 28137609528. Its totient is φ = 24117951000.

The previous prime is 26127780257. The next prime is 26127780299. The reversal of 26127780263 is 36208772162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36208772162 = 2 ⋅18104386081.

It is a de Polignac number, because none of the positive numbers 2^k-26127780263 is a prime.

It is a super-2 number, since 2×26127780263² (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 (26127783263) 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 3 ways as a sum of consecutive naturals, for example, 1004914613 + ... + 1004914638.

It is an arithmetic number, because the mean of its divisors is an integer number (7034402382).

Almost surely, 2^26127780263 is an apocalyptic number.

26127780263 is a deficient number, since it is larger than the sum of its proper divisors (2009829265).

26127780263 is a wasteful number, since it uses less digits than its factorization.

26127780263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009829264.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 26127780263 in words is "twenty-six billion, one hundred twenty-seven million, seven hundred eighty thousand, two hundred sixty-three".