26171511047 has 16 divisors (see below), whose sum is σ = 29118096000. Its totient is φ = 23321804640.

The previous prime is 26171511043. The next prime is 26171511053. The reversal of 26171511047 is 74011517162.

It is a cyclic number.

It is not a de Polignac number, because 26171511047 - 2² = 26171511043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26171510998 and 26171511016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26171511043) 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 15 ways as a sum of consecutive naturals, for example, 168728 + ... + 284274.

It is an arithmetic number, because the mean of its divisors is an integer number (1819881000).

Almost surely, 2^26171511047 is an apocalyptic number.

26171511047 is a deficient number, since it is larger than the sum of its proper divisors (2946584953).

26171511047 is a wasteful number, since it uses less digits than its factorization.

26171511047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115966.

The product of its (nonzero) digits is 11760, while the sum is 35.

The spelling of 26171511047 in words is "twenty-six billion, one hundred seventy-one million, five hundred eleven thousand, forty-seven".