26385796215 has 24 divisors (see below), whose sum is σ = 46510560720. Its totient is φ = 13833907584.

The previous prime is 26385796201. The next prime is 26385796253. The reversal of 26385796215 is 51269758362.

26385796215 is a `hidden beast` number, since 2 + 6 + 3 + 8 + 5 + 7 + 9 + 621 + 5 = 666.

It is not a de Polignac number, because 26385796215 - 2⁹ = 26385795703 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4966422 + ... + 4971731.

It is an arithmetic number, because the mean of its divisors is an integer number (1937940030).

Almost surely, 2^26385796215 is an apocalyptic number.

26385796215 is a deficient number, since it is larger than the sum of its proper divisors (20124764505).

26385796215 is a wasteful number, since it uses less digits than its factorization.

26385796215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9938223 (or 9938220 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 26385796215 in words is "twenty-six billion, three hundred eighty-five million, seven hundred ninety-six thousand, two hundred fifteen".