26261321315 has 16 divisors (see below), whose sum is σ = 31972112640. Its totient is φ = 20703644640.

The previous prime is 26261321297. The next prime is 26261321323. The reversal of 26261321315 is 51312316262.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-26261321315 is a prime.

It is a super-3 number, since 3×26261321315³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814532 + ... + 846158.

It is an arithmetic number, because the mean of its divisors is an integer number (1998257040).

Almost surely, 2^26261321315 is an apocalyptic number.

26261321315 is a deficient number, since it is larger than the sum of its proper divisors (5710791325).

26261321315 is a wasteful number, since it uses less digits than its factorization.

26261321315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34042.

The product of its digits is 12960, while the sum is 32.

Adding to 26261321315 its reverse (51312316262), we get a palindrome (77573637577).

The spelling of 26261321315 in words is "twenty-six billion, two hundred sixty-one million, three hundred twenty-one thousand, three hundred fifteen".