26510000212 has 12 divisors (see below), whose sum is σ = 46394136180. Its totient is φ = 13254532736.

The previous prime is 26510000189. The next prime is 26510000233. The reversal of 26510000212 is 21200001562.

It can be written as a sum of positive squares in 2 ways, for example, as 69288976 + 26440711236 = 8324^2 + 162606^2 .

It is a super-2 number, since 2×26510000212² (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 26510000212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31788 + ... + 232444.

It is an arithmetic number, because the mean of its divisors is an integer number (3866178015).

Almost surely, 2^26510000212 is an apocalyptic number.

It is an amenable number.

26510000212 is a deficient number, since it is larger than the sum of its proper divisors (19884135968).

26510000212 is a wasteful number, since it uses less digits than its factorization.

26510000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233690 (or 233688 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 26510000212 its reverse (21200001562), we get a palindrome (47710001774).

The spelling of 26510000212 in words is "twenty-six billion, five hundred ten million, two hundred twelve", and thus it is an aban number.