26238717949 has 16 divisors (see below), whose sum is σ = 28439123328. Its totient is φ = 24111747072.

The previous prime is 26238717917. The next prime is 26238717961. The reversal of 26238717949 is 94971783262.

It is not a de Polignac number, because 26238717949 - 2⁵ = 26238717917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26238717893 and 26238717902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26238717979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2573149 + ... + 2583325.

It is an arithmetic number, because the mean of its divisors is an integer number (1777445208).

Almost surely, 2^26238717949 is an apocalyptic number.

It is an amenable number.

26238717949 is a deficient number, since it is larger than the sum of its proper divisors (2200405379).

26238717949 is a wasteful number, since it uses less digits than its factorization.

26238717949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13764.

The product of its digits is 9144576, while the sum is 58.

The spelling of 26238717949 in words is "twenty-six billion, two hundred thirty-eight million, seven hundred seventeen thousand, nine hundred forty-nine".