26869172785 has 48 divisors (see below), whose sum is σ = 40500734400. Its totient is φ = 16961664384.

The previous prime is 26869172767. The next prime is 26869172789. The reversal of 26869172785 is 58727196862.

It is not a de Polignac number, because 26869172785 - 2⁹ = 26869172273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26869172789) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1195986 + ... + 1218244.

It is an arithmetic number, because the mean of its divisors is an integer number (843765300).

Almost surely, 2^26869172785 is an apocalyptic number.

It is an amenable number.

26869172785 is a deficient number, since it is larger than the sum of its proper divisors (13631561615).

26869172785 is a wasteful number, since it uses less digits than its factorization.

26869172785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22670 (or 22663 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 61.

The spelling of 26869172785 in words is "twenty-six billion, eight hundred sixty-nine million, one hundred seventy-two thousand, seven hundred eighty-five".