26511116545 has 8 divisors (see below), whose sum is σ = 31882352040. Its totient is φ = 21162885120.

The previous prime is 26511116539. The next prime is 26511116549. The reversal of 26511116545 is 54561111562.

It can be written as a sum of positive squares in 4 ways, for example, as 53816896 + 26457299649 = 7336^2 + 162657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26511116545 - 2¹³ = 26511108353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26511116549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5748480 + ... + 5753089.

It is an arithmetic number, because the mean of its divisors is an integer number (3985294005).

Almost surely, 2^26511116545 is an apocalyptic number.

It is an amenable number.

26511116545 is a deficient number, since it is larger than the sum of its proper divisors (5371235495).

26511116545 is a wasteful number, since it uses less digits than its factorization.

26511116545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11502035.

The product of its digits is 36000, while the sum is 37.

The spelling of 26511116545 in words is "twenty-six billion, five hundred eleven million, one hundred sixteen thousand, five hundred forty-five".