26815408047 has 32 divisors (see below), whose sum is σ = 41228928000. Its totient is φ = 17204836320.

The previous prime is 26815408027. The next prime is 26815408091. The reversal of 26815408047 is 74080451862.

26815408047 is a `hidden beast` number, since 2 + 68 + 1 + 540 + 8 + 0 + 47 = 666.

It is not a de Polignac number, because 26815408047 - 2³¹ = 24667924399 is a prime.

It is a super-2 number, since 2×26815408047² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26815407993 and 26815408011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26815408007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188454 + ... + 298572.

It is an arithmetic number, because the mean of its divisors is an integer number (1288404000).

Almost surely, 2^26815408047 is an apocalyptic number.

26815408047 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

26815408047 is a deficient number, since it is larger than the sum of its proper divisors (14413519953).

26815408047 is a wasteful number, since it uses less digits than its factorization.

26815408047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110468 (or 110462 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 26815408047 in words is "twenty-six billion, eight hundred fifteen million, four hundred eight thousand, forty-seven".